by Deepseafisher on Sat Feb 19, 2005 9:08 pm
Another thing that may be causing your cloudiness is the use of the pH 7.0 (is it the one by Sea-Chem or Aquarium Pharmaceuticals?). In some water, the 7.0 will cause some of the dissolved minerals to precipitate, causing your water to get cloudy.
9 times out of 10, you dont really even need to change pH or other water conditions. Most fish can handle, and even thrive in, water that is very different than that of their natural habitat. However, exceptions can occur with sensitive fish (such as Rams and Discus (es?) (lol)), or when you wish to attempt to breed a certain type of fish.
In my experience, you shouldn't ever add anything to the water to change perameters. When you add something like a pH buffer, it changes water conditions only temporarily, as you are not taking anything out of the water. Water will revert to what it was most of the time. The exactly wrong thing to do once the water reverts to where it was is to add a bit more of the chemical, which will temporarily fix pH, hardness, etc, but eventually allow it to increase again. After awhile, you will have too many dissolved solids in your tank, which can eventually send your fish into osmotic shock. I did this to a pair of angels once, which are much fragile than what you have in your tanks, but its a lesson to learn none the less. If you want to do anything to water conditions, you have to physically remove stuff from the water. The exception to this is when you wish to add buffers to your water to allow yourself to maintain pH where it is out of the tap.
There are a few ways to do this. The best, and least expensive way is to catch your own rainwater. This is very near pure water, and best of all its free. If you can afford it, an RO/DI filter would be a great choice, but they tend to be expensive. You could also buy RO/DI water from Wal-mart or any other local grocery store. The last choice is to add peat to your filters in the tank. I'm not sure if the peat actually absorbs the buffering capacity and hardness of your tank or if it leaks tannins into the water, but at any rate it softens water and lowers pH.
PH will be low with all of these methods, so you can mix it with tap water to get the pH you need.
If you decide you really do need to change your water conditions, tell us which route you want to go, and we can give you some more advice in the method you decide to use.