Eheim hand held gravel cleaner

[Frozenocean]

My flow must not be optimized.....90 gallon 4feet long

My flow consists of my on return, A tunze nano wavebox at one end, a seio with lots of flow (can't remember the model number off the top of my head) on the other backwall, a koralia 2 at the bottom right hand corner.

I have a couple of Tunze Turbelle nanostream 6055s with a multi controller that I haven't put in....thought too much....

I could probably use some tips on flow amounts and directions and powerhead placements.

Mostly zoos, LPS and a few branches of Bird's nest I'm growing