I really don't use that much and sometimes i don't do it every week...so i
don't think it could be that, but you never know. i'll check out that
stuff you mentioned. thanks.

"Troy Bruder" wrote in message
...
I've used to have a massive "black algea" problem until I started using
Phosphate Elimator from Auquamarine to help control my phosphate
levels....
Maybe you are using too much fertilizer??

Troy


"SlimFlem" wrote in message
news:hdEta.505381$Zo.110046@sccrnsc03...
Hi,

I have a 75 gallon planted tank and have recently started getting green
hair
algea growing on some plants and on some rocks. My plants are doing
great.
I have a Coralife compact flour light 4 x 65 I think it is. Well, I
bought
a Tetra Phosphate test kit and the blue is so dark it's off the scale.
I
don't understand this. I do 2 water changes a week. Each one is about
5
gallons. I use some of the Florish products weekly. for filters i have
an
Eheim Pro canister and a Magnum 350 that I use to run different filter
media
in. I usually use Purigen. I get good effects from it. The only other
thing I have used is some stuff called "Instant Amazon". It says it
doesn't
support algea growth, but I am starting to think otherwise. I have
stopped
using it until I stop the algea. Oh yeah, my lights are on timers and I
had
the lights running about 13 hours a day. I know that is probably too
much.
I have reset the timers to about 10 hours a day. How does that sound?

Why do you think my phosphates are up? I did about a 20% water change
today
with water that airated overnight, but the phosphate levels still read
as
high. Do you think the reading could be false? I also have a SeaChem
PO4
test kit. I take a test with that one and see what it indicates.

thanks for any advice and reading all my questions.