Never spray the screen with a hose or sink sprayer, that removes the algae from the holes of the screen. You want that algae to stay in place as much as possible. On a UAS I have found the holes do not fill in at all though. So you have to rely on what has 'grown on' to the screen material itself for re-growth.
The growth you describe sounds like dinoflagellates. It is what I used to get when I was starting up the screen, and is what I get if I run my LEDs without a diffuser and/or for too many hours/day.
But my answer is yes, clean the screen, but just remove it carefully and rinse the dinos away by gently running your fingers over the screen under slow running room temp tap water. Just don't scrape or spray the screen.
So when is a screen scraped clean ?
And when a screen is scraped clean , won't there be
chemical build up cus the algae isn't there to extract the
chemicals
Scrape it clean when it is dark or black.
It will not be worse, because it is blocking light anyway, and not growing any more, and is probably just letting go.
just discovered my 2 mandarins r MIA. could 2 rotting mandarins cause so much algae n brown slime in the 70 gallon?
I have since done a 2 pail water change but abit of brown slime comes back (
Waterchange will not help much. Just let the screen grow.
2 dead snails made big impact for my 16G. I thing 2 fish had to stress a lot.
No halogens.
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