Hi all,
I've just started a new planted tank after not having much luck with my old one. This tank is 290L/75 US gal with a gravel substrate. It's only got about 90W of lighting (T8), and I know that's not really enough, even with reflectors. I'm upgrading to a proper T5 setup when I get paid. I'm also adding ferts once a week after my water changes and I've got CO2 injecting via homebrew method (i.e. into some standard airline tubing from yeast/sugar bottles, plugged into the venturi hose inlet on my powerhead. I have another powerhead pointing towards this one from the other end of the tank, resulting in a circulating effect, and watching the bubbles, they stay suspended in the water for absolutely ages. Currently I'm getting a little puff of CO2 bubbles from my powerhead about once every second or so, probably slightly faster.
I'm aware that CO2 obviously has the potential to lower the pH of my water, but my water from the tap is pH 7.6 and hasn't changed in the week and a half I've been injecting so far. I just wondered if there were any other negative side-effects of injecting CO2. Is there such a thing as 'too much' for the plants?
Thanks in advance for your help

I've just started a new planted tank after not having much luck with my old one. This tank is 290L/75 US gal with a gravel substrate. It's only got about 90W of lighting (T8), and I know that's not really enough, even with reflectors. I'm upgrading to a proper T5 setup when I get paid. I'm also adding ferts once a week after my water changes and I've got CO2 injecting via homebrew method (i.e. into some standard airline tubing from yeast/sugar bottles, plugged into the venturi hose inlet on my powerhead. I have another powerhead pointing towards this one from the other end of the tank, resulting in a circulating effect, and watching the bubbles, they stay suspended in the water for absolutely ages. Currently I'm getting a little puff of CO2 bubbles from my powerhead about once every second or so, probably slightly faster.
I'm aware that CO2 obviously has the potential to lower the pH of my water, but my water from the tap is pH 7.6 and hasn't changed in the week and a half I've been injecting so far. I just wondered if there were any other negative side-effects of injecting CO2. Is there such a thing as 'too much' for the plants?
Thanks in advance for your help
