My rock at SPS level is kinda at MP40 level in the tank ,, its that 20" height getting me, should have got a 25" tall tank but I kinda like the shorter look of the tank, but that extra 5" makes a difference ,, I have to be careful to not get direct flow hitting my frags ,,
One side of my scape ,, I can place the MP40 where it will blow across the rock pretty much or at least place it where it will blow across the front of the scape pretty close ,, the SPS frags on that side of the tank are placed kinda at the back of the rocks ,, so I can cheat that MP40 to hit the rock with flow. Then place the other MP40 out in front of the scape ,, kind of set up a circular flow pattern ,, maybe try a pulse mode ?
I was thinking of getting a Gyre type power head to place on the center back panel ,, the glass on the tank is 3/4" ,, would have to make sure a Gyre type power head would mount to the glass ,, kinda get flow coming from another direction ,, over the top of the scape to the front panel with the two MP40s on the side ,, I would have already tried this ,, I have had that type pump in the past ,, it was a pain to deal with ,, worked good till I had to clean it the first time ,, then it seemed I was always fighting it to get it put back together right ,, I ended up throwing it in the trash ,,
So, here is the problem ,, ya'll will know what going on ,, I think I have a minor Cyno problem ,, I am not sure its Cyno ,, that's just a guess on my part ,,
During the day ,, when to lights start cranking up ,, bubbles start appearing on my rock ,, not bad ,, not everywhere ,, but its there ,, a brownish film also start appearing on the rock and power heads ,, not really on the sand though ,, kinda disappears at night ,, this could be because I have a lot of snails in the tank.
I have always read

that to help with Cyno ,, increase flow ,, if it is Cyno ,, even if I didn't have this problem going on ,, I would still think I need to increase the flow or at least try a different flow mode on the MP40's ,, I will play with the MP40's today ,, see what I think of the Reef Crest mode and also try a pulse mode also ,, thats the good thing about being retired ,, I got nothing else to do
I have a Reef Link ,, I know if you don't have a Reef link and you set up a Pulse mode ,, you turn the dial on the controller to set the speed of the flow ,, do you this with the Reef Link also?