Green film on top of water

I've added an airstone to help with the surface agitation. I'll look at
getting a surface skimmer this weekend.

Thanks


"Dave" wrote in message
...
I had a similar problem to this and I was amazed to find that one of my
filters was dirty. I stripped it down, cleaned it up and every thing was
OK!
HTH - Dave

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David Scott
Hampshire, England
"D.E." wrote in message
news:AqaAh.954399$5R2.233574@pd7urf3no...
I have a heavily planted 66 gallon tank that has been setup for a number
of years. Lately I'm experiencing a greasy green film that floats on top
of the water. All the tank parameters' are ok. No problem with nitrates,
or nitrogen. I do a water change roughly once every 2 weeks and change
about 30%. I try and "soak up" the film with paper towels and once the
water has been removed, I wipe the inside of the tank to possibly
eliminate any additional film to stay around. I notice that the film
reappears in about 4 days. I've tried filtering the water, fertilizing the
water, etc.

Suggestions? This one has me stumped.

Thanks.
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_____________________________
Later.
Doug
Have a better one.
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