I have some algae build-up in my 50 gallon tank and even though I clean it well, it persists. I was wondering if algae-reducing drops work and if they are harmful or anything like that. I'm also getting some live plants soon to help deal with the algae, but if they don't work, the drops would be my next option. I've tried reducing the amount of food I feed the fish, and it doesn't seem to help. If anyone has used drops before please let me know if they work or not. Thanks!