powerheads

[boxcar182]

what good power heads (not to expensive) would give me a good amount of flow in my 20 high. I am planning on keeping softies,polyps, lps.

[Travis L. Stevens]

In my book, MaxiJet has my vote for direct flow. I'm still rather undecided on indirect flow, but MJMods, Tunze, and Koralia are at the top of the list.

[MattG]

I would use a couple of maxijets. Either maxijet 600's or 900's. The 900s if you have no other flow. The 600s if you have some other type of flow in the aquarium.

[Justin James]

Koralia 2's

[edwing206]

Another vote for koralias. I have 2 4's in my 60 and love them.

[tripinpn01]

for cheap ones the mj's. if you can spend a little more, then the koralia's

[4wheelvfr]

I'll put in another vote for koralia power heads.

[Roy G. Biv]

koralias as well for a 20

[AZDesertRat]

A Koralia 2 should do the trick, maybe 2 but thats a lot of flow in a 20. MaxiJets are fine for a directed flow but Koralias give a wall of water instead of a jet and really bring corals to life. I own both and 3 Seios to boot but love the Koralias (3 of them so far). I held out for a Tunze 6045 nanostream forever and when it still was not available I tried the Koralias and I'm glad I did.