My zoo's.....i have a problem

[jinenon]

Why did you have the algea bloom and what kind of algea was it? Different minerals in your mixing water can cause a variety of mega blooms of unpreferred algea.

My zoo's are tanks, they open no matter how bad the water quality is. They just wont spread as fast if my nitrates are up.....

[FragOutpost]

Zoos are generally pretty tough animals and can usually withstand less than optimum conditions. If you are experiencing an algae bloom then you likely have elevated levels of nitrates and phosphates. Try to get these levels down and you should see your zoos recover. Are you using RO/DI water for water changes and top off?