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03-04-2011, 08:46 AM
from the picture it looks like it could be your bulbs, how old are your bulbs on the tank? If they are over a year then your bulbs need to be replaced.
the reason your levels are mainly at zero is because the algae is eating it up so it tests undetectable, try using some microbacter to add more bacteria to eat the nitrates and phosphates before the algae does.
get some cerith snails if you do not have any, they dig in sand and they eat that most types of algae.
you can try a lights out period for 3 days, do not turn any lights on for 3 days in your tank and only feed a very tiny amount. do a 20-50% water change before you do this, start the 3 days, then before you turn your lights back on after 3 days do another 20-50% water change.
also, what type of food are you feeding? if you feed frozen foods, take a net and put the cube or food in it and run it under water to fully thaw it and drain off any excess nutrients before you add the food to your tank, this is one of the main reasons for blooms in tanks so be sure to rinse your foods before adding them to your tank! certain flake foods are the same way, cheaper brands tend to carry more phosphates and nitrates when they break down in the tank. buying higher quality foods helps prevent this. i use PE mysis and i rinse it before every feeding, i also use formula one pellets and flakes mixed and fed on opposite days and only 1 time per day.
those are my suggestions with the lights out being the last resort.
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