Re: cloudy water
Your best bet would be to do a 20% to 50% water change. Water changes lower your TDS and improves redox. as well. Colored water can become clear with water changes, while cloudy water is a sign of high organic waste and and other impurities. Better mechanical filtration or a good protein skimmer should help, but water changes make the most improvement in a short amount of time. Note: You will have to balance your GH, KH and PH after large water changes.
Also, a temporary PH fluctuation can be estimated by subtracting the PH of your source water from your aquarium water and multiplying the result by X% water change (e.g. a 25% water change would be 0.25 in place of "X"). The final result is the PH change in you water "temporarily" depending on GH and KH factors - it's more accurate for aquariums with a PH of 7.2 and below. For example, if your PH is 6.8 to 7.0 and you do a 20% water change with a source water PH of 8.4 the result would be a 0.35 to 0.4 PH rise. Although, a high KH and/or GH (especially in saltwater aquariums), would combat that rise/fall in PH.
Last edited by LabTest57; 05-21-2009 at 19:17.