rsm with ATS

That is 1/2 of the screen?

Experiment with and without iron. Or feed nori to the tank... has lots of iron.

that is the whole screen but I had a picture of the other side. that picture got deleted!
Do you think the flow will be more even if I make the slot a little thicker... my idea is that if the slot is thicker there are more room for the water to move on and the flow will be more even across the slot... What do you think?

1/8 is good for one screen layer. It should fill in later.

alright.. I will experiment with iron and maybe nori feeding :D

[attachment=2:13q69li1]4.3.11.JPG[/attachment:13q69li1]

When I clean every week I dose som Iron. The result of the iron dosage is that the jellow spots in the middle of the screen both sides, that has turned dark and there are more long haired algae. I will try to blend my own food (garlic, artemia, krill, dry food and NORI) and then stop the dosage of iron... the next week I will feed iron and still dose liqiud iron.

But I still have problems with even out the flow... look at the sides af the screen! Im still thinking to make the slot a little more broad, so there will be more water movement. What do you think? will the algae spread more even across the sides too overtime, if I leave as it is?

A smaller slot is usually better. It forces the water to all parts of the pipe.

The sides of your screen aren't getting any flow because the notches you cut in the top sides of the screen. From the pictures it doesn't look like the slot cut in your pipe even covers the sides of the screen. I'd level off the top of your screen and cut the pipe slot so it's just long enough to accept the whole width of the screen. Also, use two twist ties on the very outside edges of your screen instead of just one in the center. It looks like it's restricting flow right in the middle too.

I bet that will even out your flow.

I follow both of you... I will cut the slot a little longer so the slot is the same length as the screen and then use two strings to keep the screen in place :D I apreciate yor help a lot :D :D

How is this going?