did you use chemical buffers to create the 7.2 ph?? if you did this might be your problem if ou have a tank with gravel (which im assuming) Dissolved Constituents
- most likely cause of cloudy water in a newly filled tank is a high level of dissolved constituents such as phosphates
, silicates, or heavy metals. If you test the water, you'll no doubt find the pH
is high (alkaline). In these cases, treating the water with conditioners will often resolve the problem.
Another option, that has many benefits beyond resolving cloudy water, is to use RO (Reverse Osmosis) water. Your local fish shop may sell it, or sell units capable of making RO water.
if thats not your problem.see whether this is :- Bacterial Blossom
- Often cloudy water doesn't appear the instant an aquarium is set up. Instead it appears days, weeks, or even months later. In these cases the cause is usually due to bacterial bloom. As the new aquarium goes through the initial break in cycle
, it is not unusual for the water to become cloudy, or at least a little hazy. It will take several weeks to several months to establish bacterial colonies that are able to clear wastes from the water. Over time that cloudiness will resolve itself.
Decaying plants or excess food that remains uneaten can also cause the milky water seen in bacterial bloom. Regardless of the cause, don't panic over bacterial blooms. Keeping the aquarium very clean by removing debris such as decaying plants and uneaten food, vacuuming the gravel regularly, and performing partial water changes
, will quickly resolve most cases of bacterial bloom. Cut back feeding
to every second or third day, which will cut down on excess food decay.
If there are particles of debris in the water that you are unable to remove via water changes and vacuuming, a flocculent may be used to clear them away. Flocculates cause particles of debris to clump together so they can easily be removed by the filter (be sure to clean your filter so it's working at peak efficiency). Flocculates are generally marketed as water clarifiers, and may be found at your fish shop.
i hope this helps with the cloudy tank problem.