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Journal Greggz 120G Rainbow Fish Tank - Part Deux!

  • Thread starter Thread starter GreggZ
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Great update, and I echo your opinion of the forum’s progression.

Rena’s were my favorite filters. As far as I was aware API bought them out and still make the filters, but maybe they are not interchangeable with the newer models API has. Im honestly surprised they croaked out on you, I had an XP4 and loved it.
 
Great update, and I echo your opinion of the forum’s progression.

Rena’s were my favorite filters. As far as I was aware API bought them out and still make the filters, but maybe they are not interchangeable with the newer models API has. Im honestly surprised they croaked out on you, I had an XP4 and loved it.
As far as I know they haven't been made since 2020. And I'm not complaining, they had a good long life.

There is a site that sells some parts but those have dwindled down over the years.
 
Hi Gregg,

Good to see an update!

I'm curious, do you still use Salifert kits to test your water? Saltwater version still?

May I ask, how do you find deciphering the colour changes using salifert, do you make calibrated solutions?. I'd be very interested learning more about your current testing methods.

I'd like to test my tank, for the same reasons. I've also read Dennis's comments about nutrient stability. I'm just not confident in hobbyist level test kits, but perhaps it's my methods. I've never made calibration fluids though.

Good to hear from you.
 
I’ve been long overdue for an update on my tank.

But before we get to that I have to say that the collective knowledge available here on Scapecruch is the best I have seen in the hobby. When we started this site we weren’t sure what it would become, and it has exceeded my expectations. We have some of the best brightest minds in the hobby, and thanks to all who have joined and participated. I hope you have found this site to be a friendly place to hang out and discuss all things planted tanks with others who share the same enthusiasm for the hobby.

Now onto the update. As some may recall I moved the tank about 5 months ago to a new home. Since that time I have been consumed with home projects and turning the new place into what I thought it could be. But boy that takes a LOT of work. In my last house the tank resided in my den on the first floor, and now sits in the finished basement of the new house. Moving a tank takes it’s toll as it takes a little while for things to stabilize and get back into a rhythm. Got past that phase and things are pretty close to auto-pilot now.

I’ve made some changes over the last few months and thought I would summarize them here.

First is that one of my old Rena XP filters finally bit the dust. I think I bought them back around 2010, so was a pretty good investment at the time. They were discontinued a while back so I loaded up on parts to keep them going. Well the parts finally ran out and now they are nowhere to be found.

So I searched around and ended up buying a brand I have never heard of on a whim. The model is the AQQA 35w-581GPH. I figured for about $125.00 worth the risk and why not give it a try.

I have to tell you I very happy with this filter. Easy to clean, comes with a spray bar which I really like, primes quickly, runs quietly, adjustable flow….all in all a good value for the money. So much so that I ended up buying two more and now have three on my 120G tank.

Next I added a dosing pump for micros. When the tank was in my den on the first floor I would wander over there with a cup of coffee in the morning and dose micros. Now that it is in the basement I only remembered less than half the time. So I searched around and ended going with a Kamoer X1 Pro 2 WiFi Bluetooth Dosing Pump. I found an open box unit on ebay for $50 and figured it was worth a shot. Set up and calibration was super easy, and it’s been running flawlessly. It’s something I should have done a long time ago but just never got around to it.

Another change is that now that it is in the basement, it’s near an outside wall and stays cooler than when it was upstairs. So for the first time in a long time I bought a heater. Since I am happy with their filters decided to try an AQQA 800W Aquarium Heater. It has a digital read out controller that mounts in the cabinet which is nice. It also turns off if the water level gets low. I am keeping the tank at 75* and so far it has no problem keeping up.

I liked it so much that I added two AQQA 500w heaters to my RO holding tanks. They are on a smart strip and turn on Friday night for the Saturday morning water change. Again so far so good.

When I set up the RO tanks I realized that one of my circulation pumps was shot. So I purchased two really cheap Freesea 1050GPH circulation pumps. They have a nice strong magnet which made it easy to mount inside the storage barrels. I run them from midnight to 6am daily to keep the water circulating and dissolve the front loaded ferts.

While on the topic of front loaded ferts I have also made a change there as well. Some posts by our friend @Dennis Wong got me thinking more about stability. I’ve tested my NO3 many times over a week cycle and they actually stay very stable. I believe my NO3 uptake rate is pretty similar to the amount of NO3 being generated by my Rainbow fish. So front end loading works very well for NO3 in my tank.

But I never really tested the PO4 on a weekly basis. When I did I found that while my NO3 was stable, my PO4 was decreasing as the week went on. So the tank is consuming more than it’s generating. To counter that I added some PO4 to my micro solution and am now providing a small dose of PO4 on a daily basis. So far so good seems to be working very well.

Other than that have had little time to do much in the way of scaping. Been keeping things pretty chopped down and only small groups of most plants just to keep them going. Kind of a minimalist approach for a while now. Plan is to start propagating more of what I have and fill it back in and get more serious over the next couple of months.

So here is where it is today. If you walked up to it and had never seen a planted tank before, you’d probably think it was pretty darn good. But I know what more it could be and plan to start working harder to get it there.

Thanks for stopping in and I hope everyone’s tanks are doing well.

View attachment 15316

Tank still looks beautiful with such healthy plants, even if there is a lot more space in there than usual!

Is there a temptation to try any different plants with the semi-reset?
 
Hi Gregg,

Good to see an update!

I'm curious, do you still use Salifert kits to test your water? Saltwater version still?

May I ask, how do you find deciphering the colour changes using salifert, do you make calibrated solutions?. I'd be very interested learning more about your current testing methods.

I'd like to test my tank, for the same reasons. I've also read Dennis's comments about nutrient stability. I'm just not confident in hobbyist level test kits, but perhaps it's my methods. I've never made calibration fluids though.

Good to hear from you.
Yes I still use the Salifert kits. For NO3 and PO4 the saltwater kits are exactly the same as the freshwater kits.........just in a different scale. I've been using them for years and find them very consistent and good enough for what I need.

And yes I have reference solutions. They aren't hard to make. Here's the recipe......

NO3 PO4 Reference Solutions.webp
 
Tank still looks beautiful with such healthy plants, even if there is a lot more space in there than usual!

Is there a temptation to try any different plants with the semi-reset?
Right now I am going to fill out what I have and see where it gets me. I've actually got a few new plants in there that are mostly hidden and I am just keeping them alive for now.

Trying not to let collectoritis take over and not really into chasing rares right now. If anything I likely need some more greens for contrast, so that will be next on the list.

There is more open space than usual right now and that has been by design. Makes my water change/pruning sessions much shorter. But the plan is to get more serious and fill things back in. I'll keep things updated as they progress.
 
I'd like to test my tank
how do you find deciphering the colour changes using salifert

I've also been getting a better handle on nutrient stability. Going over to the Hanna High Range Marine Nitrate Colorimeter has been a really positive experience.

Pricey, but goes on sale often + generally half price used on eBay👍👍

The saltwater conversion is straightforward :


I drop the reagent into 17 ml of tank water, using one of these

1000048198.webp

Just for fun I run the two minute shake on one of these, a super handy auto-stirrer also picked up on sale 😅

1000048199.webp

Decant into the checker vial to the 10ml mark, insert vial,

1000048201.webp

push the checker button. The built in timer runs: et voila, a consistent, accurate result 👍🎉

A few more parts up front, a reliable test result going forward. Has been been a game changer for me so far 💯💯
 
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I've also been getting a better handle on nutrient stability. Going over to the Hanna High Range Marine Nitrate Checker has been a really positive experience.

Pricey, but goes on sale often + generally half price used on eBay👍👍

The saltwater conversion is straightforward :


I drop the reagent into 17 ml of tank water, using one of these

View attachment 15369

Just for fun I run the two minute shake on one of these, a super handy auto-stirrer also picked up on sale 😅

View attachment 15368

Decant into the checker vial to the 10ml mark, insert vial,

View attachment 15371

push the checker button. The built in timer runs: et voila, a consistent, accurate result 👍🎉

A few more parts up front, a reliable test result going forward. Has been been a game changer for me so far 💯💯
This works, and you can also just use 10mL of freshwater and use my calculator:

 
I've also been getting a better handle on nutrient stability. Going over to the Hanna High Range Marine Nitrate Colorimeter has been a really positive experience.

Pricey, but goes on sale often + generally half price used on eBay👍👍

The saltwater conversion is straightforward :


I drop the reagent into 17 ml of tank water, using one of these

View attachment 15369

Just for fun I run the two minute shake on one of these, a super handy auto-stirrer also picked up on sale 😅

View attachment 15368

Decant into the checker vial to the 10ml mark, insert vial,

View attachment 15371

push the checker button. The built in timer runs: et voila, a consistent, accurate result 👍🎉

A few more parts up front, a reliable test result going forward. Has been been a game changer for me so far 💯💯
You know I get wanting to have the best test available. And I love the write up on it, and I also love gadgets.

But for me I've never worried too much about how exact these readings are. If they are consistent and give me a good reasonable number that's good enough. Honestly until I started doing some testing recently I hadn't tested anything in quite a long time.

That being said folks should get something better than the API kits. I've tested them against calibrated solutions over the years and they can be wildly off. Put it this way, I would not make any decisions about my tank based on what I saw from an API kit.

Curious, have you ever tested the Salifert against the Hanna? Would be interesting to see the readings from both on the same samples.
 
If they are consistent and give me a good reasonable number
have you ever tested the Salifert against the Hanna

For me personally, I don't find judging color gradations a good way to get consistent values 👍

I'm experimenting with staying within about a 10 to 15 PPM range for nitrate fluctuations over the week. So this is a simple way to obtain data points I can use 💯💯
 
Last edited:
Great update, and I echo your opinion of the forum’s progression.

Rena’s were my favorite filters. As far as I was aware API bought them out and still make the filters, but maybe they are not interchangeable with the newer models API has. Im honestly surprised they croaked out on you, I had an XP4 and loved it.
Rena Filstar filters forever! Had a XP2, 3 and 4 at one point.
 
Tank is looking good! Glad to hear you're back on track after the move. Thanks for the update on your journal.

That is a good idea to add a little boost of P04 to your micro solution.

I just got a American Marine Pinpoint pH controller after reading your post about it. I'm still dialing it in, but I'm really liking it so far!

For your oH schedule, do you use your Kasa Smart plug to control power to the whole controller or do you use the smart plug on the output of the controller?
 
But for me I've never worried too much about how exact these readings are. If they are consistent and give me a good reasonable number that's good enough. Honestly until I started doing some testing recently I hadn't tested anything in quite a long time.
Glad to hear this from someone with more experience than me and great looking tanks. I've been terrible at testing and even worse at keeping good regular notes on my tanks.
 
The UI is crazy unintuitive 🤦🤦 takes more than a little to figure out where all of the features are buried, but once you do it's actually super functional 💯💯
 
Yes I still use the Salifert kits. For NO3 and PO4 the saltwater kits are exactly the same as the freshwater kits.........just in a different scale. I've been using them for years and find them very consistent and good enough for what I need.

And yes I have reference solutions. They aren't hard to make. Here's the recipe......

View attachment 15367
Thanks Gregg,
Another question if I may. Isn't the colour chart for the P04 at a low range? I'm curious if you dilute the sample at all, because if I remember correctly you dose P04 well above the levels displayed on the colour chart.
 
Rena Filstar filters forever! Had a XP2, 3 and 4 at one point.
Yep I felt the same way. I kept all of the o rings and all kinds of parts on hand and fixed them up like new many times over the years. But sadly now the parts are running out so I think I milked them as long as I possibly could.
 
Glad to hear this from someone with more experience than me and great looking tanks. I've been terrible at testing and even worse at keeping good regular notes on my tanks.
Don't get me wrong the Salifert tests work very well. I have tested them with calibrated samples and they are very consistent. Like I said good enough for me, I've never felt the need to get more precise.

But as to keeping regular notes, it's one of the best things you can do. I can go back well over a decade and see what I was doing at any point in time. Then I can match them up to pictures from the time to see how things were going.

If you don't keep notes you can end up playing whack-a-mole with everything. If you want to better understand the effects of changes keep good notes. Trust me it's helped me greatly over the years.
 

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