Frank wrote:

"...there doesn't seem to be much CO2 retention. My PH is 7.5 and my kH is
80ppm.

I'm using an Aquaclear filter and there's no way to avoid the waterfall
effect. I tried putting it on low but doesn't make much difference. I'm
thinking of changing the filter with a canister to get rid of the waterfall
effect."

I am in a similar situation in my 30 gal with an Emperor 280 power filter. I
have a newly set up pressurized CO2 system with an Ehiem diffuser. I
currently have it bubbling at a rate of slightly less than 1 bubble/second
(50 bubbles/minute to be precise), but am not seeing much C02 retention. My
pH has barely changed (it is 7.4). My KH is about 60 PPM.

Does anybody (successfully) inject C02 using a power filter, or is a
canister\a necessity?

---- Henry

"Frank Mamone" wrote in message
news
How much PH change do you get with DIY CO2? The difference between morning
and evening for me is is about .1 . Probably safe that way, but there
doesn't seem to be much CO2 retention. My PH is 7.5 and my kH is 80ppm.

I'm using an Aquaclear filter and there's no way to avoid the watefall
effect. I tried puttin it on low but doesn't make much difference. I'm
thinking of changing the filter with a canister to get rid of the
waterfall
effect.

Is anyone here using waterfall type filters having the same problem?

Thanks,

Framk