co2

I have an old "vertical" CO2 reactor lying around (next to my UNS 90B, an upcoming project!): This old reactor works by making a "vortex/spiral" of water flowing in due to a 90-degree elbow piece, with a CO2 gas pocket at the top that is in contact/agitation with the vortex. A long clear return...

The 2hrAquarist legend Dennis Wong tested the Hanna Test Kit vs a $3,000+ CO2 testing device and found accurate results in low kH aquasoil based tanks when compared. $30 for CO2 readings vs $3,000+! It's a simple kit that comes with simple instructions, two differently sized vials for different...

Hi all, first real post on the forum! I have a 150p (150cm, and also about 150 gal empty!) rimless that I built a DIY stand for. I'll have a dedicated journal for this tank soon, as I've just taken down the previous iteration and installed a horizontal reactor into the stand. This scape was...

If anyone wants to know more accurate CO2 concentration in their aquarium, I recommend the Carbon Dioxide Chemical Test Kit [Hanna HI3818] (hannainst.com/hi3818-100-carbon-dioxide-test-kit-reagents-110-tests.html), which should be similarly accurate to the professional CO2 meter OxyGuard (which...

Good morning everyone! We are happy to announce that we have officially started our weekly deals for the holidays! Each week we will announce a new deal going on. This week, week 1, which runs from Nov 11 to Nov 16, we have all Sreepadma GroWoW! tissue culture prices lowered, plus 15% off all...

Hello everyone! Today I am starting a new little forum on the new tissue cultures in the United States; Sreepadma GroWoW! tissue cultures. For starters, these tissue cultures were introduced into the United States in August of 2024. Although there was some excitement for them, there was some...

I know this has been discussed previously but for some reason searches for "bubble counter fluid" aren't producing anything. Could anyone either answer this or point me to the correct thread? I am blowing through water in my bubble counters, and I want to use something that won't evaporate so...

Hey all, just a curious question for everyone who uses CO2 and is achieving a minimum 1 point pH drop. For those of you who have larger tanks (like a 120p), about how long does a 10lb CO2 tank last you?

I bought a 24inch "NA Advanced Co2 Reactor (Built-in Bypass Valve)" from NilocG for my 125g tank. I tried it with an external pump previously but wasn't able to get it working. I decided to give it another try with my fluval fx4 outflow. It was on for about 5 hours and ph only dropped .2 points...

OK let's do this! You always hear advice from the more experienced folks, "You just need to dial-in your CO2". That sounds cool and, of course, it's true. However, what exactly does that mean?? So today's question of the day is, how (exactly) does one go about "dialing-in" the CO2 level for...

Based on a very comprehensive discussion here (The water change - how do you do them?) I decided to start working on a high tech tank based on the advice I received so far, I will use this thread as a journal to create a new high tech tank from scratch, all recommendations/advice are welcomed of...