[datchison]

I found this for you bro:

What causes algae (green water) in my fish tank?
Green cloudy water and algae growth can be caused by a number of things. The most common causes are:

A) Food: Poor quality foods are often high in phosphates and not very digestible. The waste produced then feeds your algae.

B) Light: Direct sunlight, a cool white household tube instead of an aquarium tube or the light being on for too long, can cause major algae growth. A household tube gives a different colour spectrum that will promote algae growth in your tank. A light left on for more than 10 hours per day will also make your tank go green or light from a window/skylight will also cause problems. Choose a position for your tank away from a window, use a good quality aquarium tube and set it to a timer for 8-10 hrs a day. Change your tube at least every 12 months blown or not, feed good quality food and use a gravel siphon when changing your water. These simple steps will help keep your tank looking great.

3) How often should I do a water change?
Tanks need small water changes often. Use a gravel siphon so that you are removing the waste from the bottom rather than taking the clean water from the top. Aim to change 10% weekly. Please age the new water in buckets with neutralizer and salts for at least twenty minutes, before adding them to your tank. Also, remember to get the right advice regarding what is a suitable filter for your situation.