okay question.. are the CL intakes those 4 upward-facing PVC T's? If so, are they arranged like this to divide the suction so less sticks to them? Did you cover them with anything?
Yes the closed loop intakes are the manifolds with the four 1.5" (the actual top of the intake is a 2" to 1.5" reducer) inlets. I have not covered them yet but will be utilizing black egg crate sort of sitting down in the intake piece - part of why the 2" to 1.5" reducer was picked. A manifold was used to divide up the suction and spread it out a little more along the back of the tank. This was an idea from Paul at Oceans Motions and I am very curious to see how I like it.
I ordered them from Great Lakes, unsure the cost per off the top of my head - 1 bought 4 tanks all at the same time. I think they were like $130ish each.
Update, the tank is drained....
I noticed an issue with the tank once I filled it, the back piece of euro-bracing was coming loose at the seam. I decided to address this issue and drained the tank. I will be redoing the silicone seams on the long pieces of euro-bracing (front and rear) and adding a whole second eurobrace all the way around. The original eurobracing sat down inside the top lip of the tank, looking back likely not the best method. All of this eurobracing will still be in place as well as a whole second set that will sit ontop of the exisiting and sides/front/rear. More of the standard method of eurobracing.
I have all the new eurobracing now in hand (had to special order it). I pulled out of the pieces that were loose and have the tank all cleaned up. I am planning on install the new bracing the next few days and hoping to start filling it (again) this weekend.