Optimal CO2 Diffuser Placement in a 20 gallon long?
Hello again fellow planted tank enthusiasts!
Just had a question regarding the placement of a CO2 diffuser. I have one of those small glass ceramic diffusers and I've been trying to figure out the best place to put it. At first I had it at the end that was opposite of the powerhead but very close to the water outflow from my canister filter. With it in this part of the tank I noticed a lot of tiny bubbles clinging all over the plants and stuff, even under the leaves of bigger plants (is this pearling?) and along the glass and substrate.
A few days ago, I decided to move the diffuser around and placed it as close as I could under the intake filter of the powerhead. The sole purpose of the powerhead is to increase oxygenation and water agitation but since the diffuser's been there, I have noticed less tiny bubbles on the plants and stuff compared to being placed at the other end of the tank.
So based on the lack of tiny bubbles clinging to the plants, does this mean the new placement is not as beneficial as the first? Is it due to too much water agitation?
As usual, any thoughts or suggestions are greatly appreciated.