I have one in a 54g corner tank.

With a DIY yeast mix at temperatures between 68 and 76 degrees F, I would
have anywhere between 5 and 20 bubbles in the diffusor when the tank lights
were on. Bubble size would vary depending on unknown factors. Sometimes they
got really small, sometimes they didn't. pH moved from about 8.0 to around
7.5 with a KH of 8 on the Tetra kit.

Lighting is a single 175W MH and two 28W Actinic bulbs. I would get pearling
on some plants after the lights were on after about 9 hours.


"NetMax" wrote in message
. ..
I hope others can attach their feedback as well, plus a better estimate
of the tank size it would operate. Wouldn't plant quantity or surface
area be more relevant than water volume?