Enough Flow?

[FastUno]

I have a 90g w/30g sump, but only 20g of water filled in sump.
I use Tunze 6060 (1600GPH), Seio 820 (820GPH), & Eheim 1262 (600-700GPH). That is roughly slightly over 3000GPH. This is almost 28x turnover.

Do you think this is enough for a mostly soft/LPS tank with some SPS?

We all know the powerheads don't run at full potential after they have been in the tank a while, I am sure the turnover is more like 1500-2000GPH or something to that affect.

I am considering adding another Tunze, should I?

TIA

[thrlride]

Another tunze would help but you may be okay. That's on the low end with flow though. I've got two tunze 6000's and a panworld pump which gives me near 4200 gph or 46x turnover.