Help?

[durian]

Hmm, due to setbacks financially, i have decided to use overhead filter system. I need advice on maintaining my 4 feet tank. How do i maintain the co2 input in the tank, without losing most of it to the bubbles from the OFS? I am using DIY CO2 at the moment, if not enough, i will boost the amount of co2 needed.

[David]

durian....with the overhead filter system, you are going to loss more CO2 because of the water turbulence it is going to cause. if you are on a budget, do consider a powerhead instead

[PeterGwee]

How big is your tank for a start? You can try to see if extending the outlet of the OHF below the water surface deep into the tank helps or not but I seriously advise to sell the OHF away and get an internal filter if your tank is not large.

[durian]

4 feet tank.

[naturetan]

Your tank is rather big for OHF. There's one way I've tried it on my friend 2ft OHF, it works rather well. For 4ft tank, its tougher but you can try.

Firstly, get a CO2 reactor. Cheap one cost less than $20(Taiwan brand). Then find a suitable size of hose that fit both your reactor and filter outlet. Doesn't matter if outlet is slightly bigger than hose. You can use teflon tape to increase hose thickness and seal it, thus minimize water leakage.

This setup will direct water outlet from filter straight into the reactor, preventing any water surface agitation.

Hopes this help.

[bclee]

A lot of the CO2 is lost in the wet-dry section in the filter not only at the water outlet.

BC

[geoffrey]

Another OHF limitation is it restricts your placement of more lights if needed.

[durian]

thanx guys~