New Seahorse Tank Up - Flow Problem.
 

I have a 75 gallon Seahorse tank that is just setup. Still in the cycle process but my question is i have small power heads one on each side they are 240 gph units. I do not have the return pump running yet but these two tiny power heads do not seem like they are moving much water. Return pump is a DC Current Eflux 1050 gph pump. Do you believe this is enough flow. I am used to a standard tank with 20x flow and this just seems low. Please give me some advice it will be greatly appreciated. Thanks.