Yes, as if I weren’t having enough water problems with the pool. Little cloudy, combined chlorine too high. Cya too low. ph fluctuating...etc. etc. And my grandson decides he wants a 20 gal aquarium. We have been trying to balance that water for over a month! And I keep getting confused between what’s going on with the two of them!. Happy to say, they are both almost balanced. Ask me what I did where and I really couldn’t say. I don’t understand the chemistry behind any of it. But I at least remember when A happens do this...when B happens do that. THANK YOU TO THIS SITE!