so here we have a block using the thermaltake base.
i have left the base at 4mm for the moment and lowerd the fins to 3mm. After testing the inlet jet i noticed that the water was not touching the top of the fins so took 1mm of them.
once the silicon sets i will do some tests. Then i plan take 1mm off the base and test again. I will continue this until i get to 1.5mm.
I also ran some water flow tests with this base and with an akasa base.
i have a 900l/h aquarium pump i use for testing which took 30 seconds to fill a 5l container This worked out to 600 l/h with the pump and 1/2 tube.
The akasa base that took 45 seconds or 396 l/h
the new thermaltake base was 45 seconds too.
so the extra fins dont seem to slow the flow anymore.