please help

[deano]

hi deano here,i have a problem with my water tank where i have my garden. it is only posible get water now and again, so i have a 1000 ltr tank and it keeps going green with algea.is there anything i can put in there to prefent it like a chemicle or anything. thaks:

[Chris]

there are algaecide chemicals, but water storage tanks should always be black and fully covered. Algae need sunlight, clear, light, or thin plastic tanks can let light through. A fully enclosed black tank does not.

So, try covering your tank. No more sun, no more algae.