PeacockBass said:Oh? Please, explain to me exactly what happens.
How does a water change FEED the problem? WHAT is FEEDING the algae? WHAT is it EATING thats in the "new" water? HOW is it prolonging the problem? Oh? Oh?
Please, elaborate.
If his tap water has any amounts of phosphates then he would be feeding the problem. With green water I would do a black out for a couple of days, not turn on any lighting and keep feeding to a minimum. I would check my tap water for nitrates and phosphates and to get real technical I would keep my nitrates to 10ppm and my phosphates to under 1ppm or less. A 10:1 ratio keeps algae blooms at bay. If you have barely any nitrates and phosphates in your tap water then change the water when it reaches 15 ppm nitrates and learn how long it takes to get to that value. If it takes 2 days, then do water changes every 2 days, if it takes 3 weeks then do water changes every three weeks.
The main problem is the balance between your light levels and high nutrients in the water. Do not use the algae fix potions you can buy at the store...