I've been battling some serious algae problems for a couple of months and
have just stumbled accross what I think could be the problem.
Not long fter I set up my my 4 ft tank I was replaceing the bulbs and
clumsily managed to break one with over the open tank.
A large porting fell into the water, which I later removed.
I thought nothing much of it and all the fish have been fine.
What has been a problem though has been a persitant algae bloom.
Constant water changes seem to have no effect.
Sure enough the phasphate level was 4ppm.
Just as I was about to start slagging the pro flora base for adding
nutrients, I stumbled upon a website about exploding things in microwave
ovens.
http://www.everist.org/special/mw_oven/#trials
The writer microwaves a mini fluro tube............"which strike the
phosphor (the white powder) "
Looks like I have my answer.
Phosphate sponge in place, I think I've finally got it all sorted!
K