more flow needed for these corals?

[hops523]

Alright so right now I have one maxi jet 600, with 2 power filters that are for 15 gallon tanks. I have a 20 gallon. Right now I have one kenya tree frag, and a small colony of zoas. Gradually I would like to add these corals: candy cane coral, brain coral, some type of xenia, fox coral, bubble coral, and either a frogspawn or hammer coral(but not both). I am wondering if I should get another maxi jet, or a koralia for my tank. Would I need to do this, or do you think I am ok with the flow I have right now?

 

[Ehgemus]

What is your lighting? The candy cane needs strong light and good flow.

 

[hops523]

I have a 30" 48 watt nova extreme T5 high output, and then I have just a little 15 watt strip light in the front of that.

 

[Lenny718]

Your lighting and flow should be fine for those corals.