which marine corals can survive in normal water wirthout the aid of reverse osmosis?

Answer 1

Leather Corals, Xenia, Mushrooms and maybe open brain corals. They are all pretty strong.

As for the water:

Umm, yeah, if you let it sit for a week or so in a container to let all the bad stuff go out it is better.

I have a water filter (not reverse osmosis) and it seems to work fine. If you are going to use tap water, I'd put some chlorine remover in it first then let it sit for a week. Buy a large container like a garbage bin (with a tight fitting lid) to store your seawater in. That should do it.

Be careful not to add any sediment that collects at the bottom of the container to the fishtank. You don't know what the hell that stuff is.

Oh and make sure the temperature and specific gravity are correct (but you knew that already).

Answer 2

Do you mean which corals can survive in salt water which wasn't filtered by reverse osmosis?

I have no reverse osmosis water system on my salt tanks (Had them for 30 year corals for the past 15) and all my coral are fine. Water changes with regular tap water and using aquanova+ as a dechlor).

Very few fish stores use reverse osmosis filtration for their tanks. Just about any coral you will buy in LFS are fine and do not require reverse osmosis filtered water, they are in regular water.

Answer 3

Most of the easier soft corals are fine in tap water that has been treated with a dechlorinator (or left to sit out for 24 hours to allow the chlorine to evaporate - this method will however not be effective if you have chloramines in your water - call your water supplier to find out if you need to use a dechlorinator or not).

So, that's most of the leathers / finger leathers, neon green / orange tree, blue palm, xenias.

However, you can get a reverse osmosis filter off e-bay that should only run you about 100$.

Answer 4

Corals do not need to be in reverse osmosis water. Technically speaking, if you want the best water for any tank, fresh or salt this would be the ultimate way to go. However millions of tanks salt and fresh as well as many pet stores have perfect tanks without it.

If it is sold in a local petstore, it can survive in your tap or bottled water without harm. Corals which need specific conditions are more than not purchased on line. If you find one you like, read about it since there are more than a 4,000 known types of corals.
It is impossiable to give you the entire list.

Not all are allowed to be harvested for sale.
www.coralfilm.com/about.html

Answer 5

If you looking at some reverse osmosis system for your marine.... I checked them out, they are pretty good.

www.GTAwater.com