"Dr_No" no wrote in message ...
So increased CO2 will reduce algae problems?

I will be running 2x125W Mercury Vapour Pendants so approx 2W/G
Tap water is fairly hard so I dont think pH will swing too much



"djay" wrote in message
news:usKwe.13239$Xr6.4673@trnddc07...

"Dr_No" no wrote in message ...
I'm in the process of setting up my 150 gal tank. Looks like my funds
wont stretch to a presurised CO2 setup so i am wondering if DIY soda
bottle/yeast CO2 systems can work with a tank this size?

I plan to use a powerhead into a gravel vac with bioballs/sponge to
disolve the CO2 so it should be pretty efficient at using what CO2 I
get.

How many 2l bottles would I need?

Thanks


I don't recommend DIY for this size tank. You WILL have algae problems
if you have 2W/G.

But if you DO decide to DIY then I recommend the 64 OZ plastic juice
bottles. Larger base and larger lid made it easy to fill with
ingredients and harder to tip over. You'd need about 3 or 4 of them to
get any decent CO2 production.

The problem with DIY is consistent production and with the peaks and
valleys in DIY your PH may (WILL) swing wildly.

HTH,

Djay



Bill answered correctly. Additionally, it was my experience that DIY in a
LARGE tank (mine was just 75 gal) was disasterous. I experienced a horrific
algae outbreak that was only mitigated after I used a pressurized CO2
system. Give it a try - heck it might just work for you!

DJay