Ok so when I first started looking into slatwater I just rushed out and picked stuff up and realized I needed to slow down. We'll a year later started a tank a 75 compared to I was gunna do a 20 at first.
But I wanted to go over the maxi jet multi use circulation pump. When I first started I was gunna do a 20 so I picked up 2 400s and somebody told me they would be good enough. I wanna call bull on that statement. I'm a newbie and don't know much but would have to say I love these things for being half the price of my nano hydor that's have the power. I use two in my 75 and they help quite a bit. Not close to enough by them selves but the versatility with them is better then any other.
Use them anyway you'd like they are amazing. Obv hydor makes a really nice pump as we'll but not as versatile as you can see my 1150 in the one pic