I think the bubble algae is your biggest problem. It's only on the pump, but can spread, becoming a problem, fast. GHA & Red slime can be ared for by a clean up crew. Do you have one?...I saw just a few snails. ReefCleaners.org | Clean Up Crews and Macro Algae - Home is a 3reef sponsor & is a great place to get our cuc. I forget what you're supposed to do to rid of bubble algae. Don't use tweezers on it. Depending on the kind, that will pop the bubbles & make it worse.