Hello i dont no was going on with my tnak the algea just come look like over night at this point im really lost on what to do the time been running for sometime now im just really getting to that point im look for any tips or anything to help im lost and just ready to just give it all up i dont understand no more but i still have a lil hope in me thanks for your help. I got a water changes coming up asap i haven't did one only one time this month how can i deal with the algae on a rock and and sand bed should I remove the sand