how long does it take for saltwater to be clear in a tank?

Answer 1

Listen to Carl S.
BUT, I don't totaly agree with the use of a UV Sterilizer IN a reef tanks filter system, You would run the risk of Starving a lot of filter feeding animals in your tank by killing all of the micro organisms that they eat.
I use a UV sterilizer and RO-DI to Produce PURE water for top ups and Partial water changes.

Answer 2

What do you mean by clear? Has your sand or dolomite gone swishing all over the tank?

how long has your tank been running? Usually if you are using dolomite or sand (not live) it needs to be washed well. It will usually clear in a matter of an hour or so. If your tank has not cleared, your dolomite was still dirty. Best thing to do especially if you are just setting up your tank, turn off the filter and power heads for about a half hour. This will allow the tank to settle. Then you can restart your filters.

If you have fish in the tank thre are a few questions I would have prior to telling you why it would be cloudy.

Remember you have to cycle your tank for 6 weeks no less prior to putting fish into your tank.

Any additional questions feel free to email me and I will help any way I can with your tank.

Answer 3

Here are a few basics:

IF NEW:
*Did you rinse your sand? The sand should be gently rinsed until clear.

*How long has your tank been running? Allow you tank to run 5 days are more prior to adding fish.

*Did you add anything to stimulate nitrifying bacterial growth? This should be done just prior to adding fish (not right after setting up). On of the simplest and most proven methods is the exchange of established filter media from another SW aquarium that is established

IF ESTABLISHED:
*How do you feed? Do not overfeed and use quality foods based in aquatic ingredients such as Spirulina 20, HBH Marine, Omega and many others.

*What are your filters? Good bio filtration is a must and there are many proven and many exaggerated methods. Wet/ Dry filters, Sponge, Canister are all proven to work (also Protein Skimmers as well). Bio Wheels are over rated as per tests I have conducted in my maintenance business.

*Do you have live rock? Live rock is proven to work like a filter for both nitrifying and de-nitrifying bacteria, HOWEVER if not cured this can cloud a tank and cause major pollution problems.

*Do you have a UV Sterilizer? Although they are not essential they are effective for keeping established tanks clear, aiding in the prevention of disease, and helping with the misunderstood Redox Potential. (See this article about the Redox Potential: http://www.americanaquariumproducts.com/Redox_Potential.html )

For more marine aquarium information and links, I recommend this basic article:
http://www.americanaquariumproducts.com/Basic_Saltwater.html