It depends on your wet/dry setup. I assume you have a sump with that wet/dry? You need to add your sump volume to the calculations.
For heater, probably TWO 200W-250W heaters will do. (I'd use 2 heaters in a big set up rather than one big one in case one fails).
Your return pump size depends on the height of your tank vs the sump & a bunch of other things. You want maybe 4-5x total water turn over per hour (up to 10x if you believe in over-filtering or if you ever want to do SW
). So, unless you have a HUGH sump, you'll need a pump that can handle 400-500 gal
/hr at your head height. <The nominal flow rate of a pump is for zero head height & no tubing. Once you decided on a pump, you need to look at the detailed specs to find out what is the real flow rate at your head height. EG. my Hydor is rated at 750 gph
, but at 3' of head (that's how high my tank is from the sump) the flow is around 650.>
Another consideration is your overflow capacity (ie how you get the water into the wet/dry). Your pump cannot not exceed that or you will have a flood.
All of the above assumes you have an external wet/dry. We actually need more details - where is the wet/dry, overflow setup, drilled tank?, sump setup .... etc. to give a meaningful recommendation on the pump.