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I'm not sure but they say 10 to 20 times the tank size ,,,I might be wrong but does ring a bell,,, so 80 gallon =800-1600 gph pump
I think you have to stick to the 10x the tank volume so you might have to go bigger and as for the skimmer they also say get one that's at least 2x the tanks size,so you have 80g get a skimmer that does 200gph
Wave makers better,,power heads to strong and direct
Pretty much same thing get two either end of tank and make sure there pushing 400gph each
No not at all,,what filtration are you running,,have you got reef tank or FOWLR tank ???
You want about a 5 to 10 times tank volume through the sump.
For flow in the tank, you want anywhere from 20 to 60 times you tank volume. If you want to keep, SPS corals, you will want to be on the high end or even a bit more. For soft corals, you can be at the low end.
The size of your skimmer depends on your bio load. If you intend to pack fish in, you need to dial up the skimmer. however, going with a skimmer that is rated bigger than you expect to need is a good idea. For an idea, Bulk Reef Supply rates the gallons skimmers will handle which is usually less than the skimmers suggest.
Bio load is a term for biological "weight" in you tank. What we are concerned with is waste production because we have to remove or neutralize the waste or the tank becomes a toxic waste dump.
Now many people think of it as the number of fish per gallon. But say three tiny neon gobies produce far less waste than a 14" tang. But it is not just the weight of the fish either. Active fish consume more than very sedentary fish. For example, many people go with one fish for 10 gallons. But you could not put 8, 14" tangs in an 80 gallon tank (not even one really). But you could put in more than 8 nano tank fish in an 80.
Ok, so then getting to fish (mind you i havent actually started the tank) what do you is good in ways of beginner fish
Do you have an idea of what fish you are thinking about keeping? I like to plan a fish list and then choose my order for adding. Personally, I think every reef tank should have a pair of clown fish. They are also considered to be a beginner fish.
I want clownfish, tangs and a seahorse 2 for sure
I would take seahorses off your list. They should really be in a tank dedicated to them. Clown fish and tangs would not make good seahorse tank mates. As far as tangs, it would depend on the dimensions of the tank. Even then, you would be limited to one tang and it would have to be one of the smaller tangs, such as the kole tang.

