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An area of confusion for me has been the degassing of CO2 in my aquarium. It's often talked about but we don't seem to have real data except for that done by our friend @Dennis Wong in his article How to measure CO2 levels in an aquarium.

According to this article, standing water sits at .6 ppm of dissolved CO2 and a normal planted aquarium will degass to 2-3 ppm. Therefore, our tanks are never full degassing CO2, especially because we supplement to such a high level. This, in turn, concerned me of an ever increasing CO2 level.

For example, if we started at 2-3 ppm and we went up to 30 ppm on day one, is it possible that on day two you degass only to 3-4 ppm and that is your starting point. Adding the same amount of CO2 would then end up at 31 ppm on day two. This would continue increasing the total high over time.

Curious that I have not created a CO2 disaster in my tanks in the past, I decided to pull up my Apex Fusion log showing my pH drop daily. Here it is:


I was pleasantly surprised to see that my 1.3 - 1.4 pH drop is absolutely consistent day after day. This seems to indicate that I am not on an ever increasing cycle but one that repeats exactly the same day after day.

Does this mean that degassing really isn't an issue to be concerned about or that it's more about oxygenation than decreasing CO2?

Time to start a new thread.

I’ll fill in some details later, but I’m working on the hardscape now. Any and all criticism is appreciated. The vision is nothing more, and nothing less, than something appealing to the eye.

90cm x 30cm x 30cm Lifegard Aquatics ultra clear bookshelf tank. Buce and anubias on the hardscape, stems towards the back and center, mid to front carpet with some changes in shade and texture down to a flat grade on the right side of the tank.

Lily pipe inlet and skimmer will be in the back left corner with the outflow in the front left to hopefully achieve circular flow. I’ll be running an in-line diffuser. Light will be the P600 Pro that I regrettably did not upside to 900. Oh well. I’ll mount it high and hopefully it’ll have enough spread.

I have some dragon stone and red lava rock rubble I’ll use at the base to blend into the substrate, as well as some stratum I may or may not cap with.

I am working on my mistakes…. The next one will be huge.

Instead of continuing the old build thread, I wanted to make a new one. This build might go just as terrible, but I want to put the old one behind me. I really wish I had given myself a month or two break because I feel like I have algae PTSD. I’m pretty burned out, and I sort of dread trying again. Oh well, too late now.

I wanted to try 2Hr Aquarist stuff, but already had the Controlsoil. I bought it a year prior (see previous journal) and decided to go ahead and use it. Hopefully I’ll make a successful transition to nutrient depleted aquasoil, and then restart with the 2Hr stuff later.

I didn't plan on starting a new journal until about a month in, but since my aquasoil is already starting to give out of ammonia, I need to get it going to get help making the transition to full NPK dosing.

With that said…..

Ben’s Plant Pharm 2.0
(BTW, in case you were wondering, I’m a pharmacist. Hence the pharm)

Setup Date
8-11-25 (Day 0)

Goals
Enjoying some farming.
Successfully navigate the different stages of aqusoil nutrient release and subsequent depletion.

Tank
ADA 60p

Light
Chihiros WRGB Pro II
Starting out at 40% of the Fish setting
Red 53, Blue 34, Green 55, White 23
PAR 105 under the light (estimated)

Substrate
UNS Extra Fine Black 1 x 10L bag

Plants
From Previous Build
Xiris Red from S21 Aquatics
Eriocaulon quinguangulare from Cherries Nature Aquarium

TC plants from Buce Plant
Cryptocoryne parva, Pogostemon helferi, Rotala Sunset
Came in in questionable shape despite paying extra for insulated box. Were very jumbled.

TC from The Fish Room
Alternanthera reineckii ‘Mini’, Rotala macrandra, Gratiola viscidula, Rotala wallichi, Lobelia Cardinalis ‘Mini’

From S21 Aquatics
Synogonthas Vichada, Centrolepis drummondiana (Blood Vomit)

From Aquatic Plants Factory
Pogostemon stellatus Dassen and Rotala Florida? (TBD)

Fertilizer
Micros: Burr Aquatic Trace (BurrFertz)
Macros: DIY- dosages to be determined
PO, K, Mg at the beginning. Been adding about 2-3ppm PO4 daily
Transition to the addition of NO3 as aquasoil depletes

Filter
Oase HOB BioStyle

CO2
Injected via GLA regulator
Bar type diffuser placed inside the HOB filter

Livestock
None

Notes

• The Alternanthera reineckii ‘Mini’ was in bad shape when I opened the container. Might have been bad when I got it and then it was a week before I used it.
• 8-15-25: Added Synogonthas Vichada and Blood Vomit. Checked NO3 for the first time. It was 40. Started making twice weekly water changes.
• 8-18-25: Increased light to 45% of the full “Fish” setting. PAR should be just about 114
• 8-23-25: Pogostemon stellatus Dassen and Rotala Florida added
• 8-29-25: Discovered my NO3 was 0. Aquasoil is giving out way earlier than I expected
• Had a short diatom period, but it seems to be resolving
• I had planned to increase my light to 50% of full "Fish" setting which would be a (tested) PAR of 126, but right now, things are going so good, I don't want to mess it up. We'll hold off for now.
• 8-31-25: Starting to dose my own mixture of NPK and Mg. I really need to determine my actual water volume. What I am trying to dose, and what it tests as after I dose it are a good bit off.

Day 0






Day 1


Week 1


Week 2


Week 3






Here you can see the older Rotala Sunset on the left. On the right is supposed to be Rotala Florida, but it is looking a lot like the Sunset did at the same stage. Argh!


Pogostemon stellatas Dassen changing from emersed to submersed form


Syn Vichada is doing pretty good. It is growing slow. The new growth is all green and the old growth is dying off. I want to cut old leaves and clean it up a little, but right now, I don't really want to disturb it. I watch it every minute. I loving having it.

I managed to acquire some Eriocaulon ratnagiricum. It should arrive early next week. I am pulling my 60U out of its extended dark start this weekend, and figured it would be an intriguing addition at the base of the large stones. (Not my image, this was from the seller):



I did read Dennis Wong's 'how to grow' for this species, which was very helpful, and will add some APT Jazz in the areas that I plant it as it seems it wants a fairly rich soil. Tank is 0KH, remineralized RO with APT Sky initially to dGH 6 when I initiated the dark start.

However, despite being sold as 'inert', the Sensei stone I acquired from AFA is most definitely not proving to be entirely inert. I haven't drained the tank yet, but will this weekend when I start planting, but this morning KH is holding at 0, but dGH is currently sitting at 10! There is a vein of quartz-like crystal running through the largest stone, presumably calcite, as it is driving the GH up, and leaving KH unaffected. Calcite reportedly can run in some Magura/Sensei stone. I am already reconsidering the type of shrimp for this tank based on the higher GH level, but I am wondering if anyone has experience with this plant in a tank with higher GH? This Erio is KH sensitive, and the tank is ok there, but I am wondering if the excess calcium in the water column, pushing that higher GH, might be less than ideal for this Eriocaulon?

I did consider sealing the vein of calcite with cyanoacrylate glue, and covering it in riccardia to maybe slow the leaching/rise in GH, but I think most of the rocks have at least some of this material running through them to varying degree, and I am expecting that the leaching could increase once the CO2 is running, and the pH drops. Regardless, if anyone has experience growing this lovely little spiky Erio, please share!

I hadn't seen it mentioned by others that attended Aquashella, but if you hadn't already heard about it or seen it in Aquashella videos, ADA has come out with Amazonia Pro. It's not a replacement for Version 2, but an addition. It is essentially Version 2 on steroids with higher nutrients and of course the negative side effect of potentially higher initial ammonia leaching and, if your not prepared and skilled, more chance of algae. That's even from the mouth of Homma-san himself. The scaping competitors were using it in the competition and AFA was selling 9l bags at the show. They said it would be available on the website within the next couple weeks.

Like my no-tech bowl scaping thread where I have a list of inspiring bowl scapers, I thought it would be awesome to do the same with a Dutch-inspired / True Dutch thread! I have a ton, but I'll post them over time. If anyone else finds good examples of dutch tanks, post them here, too!

---

First up:



I translated the transcript and got as much info as I could. Here's the things I find interesting:

50% WC weekly

He front-load doses the incoming fresh water volume to:

• NO3: ~30 ppm
• PO4: ~4.2 ppm
• K: ~34 ppm
• Mg: ~3.4 ppm

Meaning, his accumulation numbers can never exceed these values (that's the benefit of viewing his front load in terms of incoming ppm values vs total water volume).

If you were to look at it through full-volume dosing lens, it's:

• NO3: ~15 ppm
• PO4: ~2.1 ppm
• K: ~17 ppm
• Mg: ~1.7 ppm

GH booster is used but not described, so IDK how much Ca/Mg he uses.

Micros are dosed 3x per week, but nothing specific provided. Probably ~0.3-0.5ppm/week? He does say the iron is all gone/undetectable by the evening.

Beautiful tank! I love the balance of colors, textures, and plant groupings. That tiger lily is amazing. Very little algae, too!

I feel i need to do a journal so I have a internet calendar on what's happened or Ill forget lol! This is now 4 months back into the planted tank world and I'm happy to be back yet lost on true aquascapingI I have a current 29g as a farm tank for future builds going. zrdr 4l co2 bought locally full setup for 40.00, 29g free. A 20long I just bought with metal stand, hygger decent new led light.new heater. few foam bubble filters, ar a nice dual air pump. some new stratum about 16lbs , tons of good food, etc etc and 6 live plants crypts, swords, anubis about 30 stems of rotundifolia 12" tall for 85,00 it was a decent deal with what is came with , I thought!
Original plans was a 29 and 20 long. Well 3 weeks forward to 3 days ago picked up a free 36 bow front with stand, foods.heater, some dragon stone, bubbler all working freeby deal of the year for sure! The tanks pretty clean, some light hard water stains lll razor blade off very clean. Did come with about 35lbs stratum and blk rocks mix.

I threw substrate in tank after light rinse. LOL it went to pitch blk even after 2 big filters with filter floss still blk water after 36 hours later its muck now the stratum is crap imo other than deeper substrate to cover up with build. I have no clue on any age of the stratum 2 months or 5 years no info was free on side of road literally. I decided today to dump the stratum its a dam mess! may strain the stratum with my several size buckets to strain out small materials away from the blk gravel and use it with eco!? Just got 2 20lb bags of eco complete for 55 shipped my 2005 go to, easy no breakdown and same cost as bulk gravel from pet stores in the end.
I Would do the blk blasting sand its cheaper but don't want all sand and in end as I still do some gravel clean monthly oops.. The eco complete last imo forever I have 20 year old eco now in tank. Yeah its inert but still whole rocks. I"Ill be posting many pics of the my dry scapes holy hell! And more as it goes. Its been 19 years since I've done a planted tank def not a newbie just don't remember as much as I did and things have changed any help appreciated for sure! Joe burr has been help sure thanks dutchscape god!

Posted few pics of old tanks 19 years ago when I didn't know what an aquascape was lol no co2 just dry ferts, metride 14 and power compacts it worked! algae was very null. Im calling my new tanks the cheap skape 20 and now 36g the freebie. I usually try to go cheapo as I can get Im not rich rather spend 30.00 on steaks at home than 30.00 on stems lol. I'm mr diy I only buy what I cant build usually.

leaves curled up after the water change in the aquarium.

100l, change 35

Add 30ppm Ca. 8ppm Mg in 35l

I’ve had this idea in my head for a couple of years now and it’s finally taken shape. The inspiration came from a local conservation area/regional park. I wanted a tall nano scape with stone/wood hardscape with a pump/filter in the rear plumbed so the outflows exited at the top and trickled down the face of the scape. Primarily a moss scape dotted with some native accent plants.

Tank: 15cm x 15cm x 25cm ultra clea low iron nano tall with floating bottom.

Light: random plant light from local store.

Substrate: random top fin black pebble gravel that came in a bag with a marketplace tank setup.

Pump: random pump from my dad’s garage from one of my brothers super old tanks.

Plumbing: extra black RO 1/4” tubing and quick connect fittings from a reptile mist kit (for another project).

I started by building the frame with divider panels. There are two ledges that propped up the hardscape, and the whole frame was draped and buffered with 3d spacer mesh (Epiweb) to retain moisture and humidity near the top of the scape without needing a lid. The mesh also helps keep the wood in contact with water, and aids establishing moss.









3d spacer mesh:



Back filter installed:



And the dry fitment test. Had to file down the rock on both sides so it fit without being forced in there. I constructed it this way so the whole scape could be pulled out at once if I needed to reset it, or just the pump if it needed to be serviced. More 3d spacer mesh was wedged in all the crevices for additional wicking.



Topped up and testing:



Additional hardscape up top to help hide all the outflows, and provide space for the finishing flora (maybe some air plants and/or orchids).

Hi guys!

I'm new here, but not entirely new to planted tanks though I've been out of the hobby for the better part of the last decade between kids and moving a couple of times - but finally in a spot where I can do something again. I'm mostly going to be making things up as I go along, but plan on a lot of automation (I want to integrate everything into home assistant) and a lot of DIY as I love the challenge of building things out myself.

The starting point:

I picked up a 90P rimless, low-iron tank on a great deal.



I have a rough idea in my head for a stand to be built from plywood - just have a couple other house projects to finish off before starting that built.

Wife says I can only have one aquarium, so for this tank, I want to go all out with a sump to allow for auto top off, and auto water changes, auto fertilizer dosing etc. etc. I have half a plan in my mind.

I've also started on the light fixture which I've modeled up in CAD, and plan on making out of an 8020 extrusion, and some 3D printed bits.

I'm using bridgelux gen 3 thrive CW (3000k) and WW (5000k) LED strips which have super high CRI at 98+ along with some specific XPE2 wavelengths that I'll solder onto some starboards. Far Red (730nm), Red (654nm), Cyan (495nm), Blue (455nm), Visible UV (415nm). Each segment of the white channels will be on its own driver so I can adjust left to right brightness in thirds, and each colour channel on its own driver so I can vary each channel on a time-based approach.

These will be run from a custom PCB board with Meanwell N-LDD drivers, and will run ESPHome on an ESP32 so it can link up with my Home Assistant installation.


That's it for now, this will probably be a very slow build so be warned if you follow along!