Just have a quick question for everyone on here. I was recently battling algae pretty bad in my 5.5 gallon, but I think I have got it under control enough so it isn’t overbearing. I was curious if anyone had recommendations for liquid CO2 as an algaecide, because I want to make sure I don’t go through a bad patch again (and I still have a tiny bit of algae). I have italian vals in there, and I’ve seen things saying flourish excel isn’t good for them. Any thoughts on API CO2 booster? Let me know .