Just wondering what your thoughts are on these, and how well they work. Really thinking about buying one rather than having to deal with extra plumbing for making my own reactor. My tank is 90 gallons with Rena XP Filstar XL canister.

i use the GLA one and it work really great! I dont like to c any thing beside in/out flow sooo . best at 35psi( around 3-4bps)

I am using UpAqua on 3 tanks and I am pretty happy with them. You do get some misting out of the outflow but you have to look hard to see it.

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I am running one (GLA) (and a reactor). I like the misting of CO2 it gives the plants. Very easy setup. Just have to run your pressure at about 40psi.

I have UP Aquas on two tanks so far and they work great

Consensus is people love these. Unfortunately, there's a steadily growing minority that have had one-time or chronic problems with these things. Clogging, cracking, ridiculous pressure requirements, and poor connection design have been issues.

This is aside from issues stemming from the cracking pressure, which can be anywhere from 25 to 45 psi or so.

edit - I've used 3 of these. Using one or more of these in a rig that feeds 2 or more tanks is, at best, difficult. However, individually, they tend to work very well.

Im using the old Boyu CD-01. For some reason these have all but disappeared from E b a y

I probably do not understand the issues, but if you have a single regulator with multiple co2 needle valves then you can feed multiple of them, one or more per tank or multiple tanks. That assumes that you do have one filter/pump for each inline atomizer though.

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I use the ista mix max. Its really similar to the DIY reactors, but I think the design is a little better and the price is right.

Not sure why, but not many people seem to use these.

I use and love gla's inline diffuser. I have had no issues with clogging in 6 months I've had it. Am also in the process of building up a 90p setup and plan to buy a second unit based off the positive experience with the first.

It has to do with the different cracking pressures of these things. I was, after much difficulty, able to dial in two of them after toying with working pressure for awhile, but was completely unable to balance them with a third. The type of needle valves also plays a role, I think. The ability to completely, or almost completely, close (most of the industrial metering valves aren't designed for shutoff) would likely help.

Do you all think it would work fine with Fluval FX5 Canister Filter? That what I am thinking of getting.

Thanks for all the input.

inline diffuser on the FX5 will take some DIY'ing love whether you choose to replace the complete 1" ribbed tubing from Fluval or use some plumbing inginuity to neck down the tubing to the diffuser. I have not found a commercially manufactured inline Diffuser for the FX5 sized hose. Others might know. I ended up putting my diffuser on the 205 I had and running a second smaller canister. I was using the Up aqua diffuser ,and it required about 55 psi to get it to diffuse.

How do you know if the gla inline diffuser is clogged? Does it shoots out any mist/bubbles when you use the inline diffuser?

Gotcha and thanks for the explanation. I am up to 2 on a single regulator and was thinking of adding a 3rd, all needle valves being Ideal 52-1. I am at a higher end of the flow and that might be covering up the balancing. Thanks again for the heads up.