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my 2 cents: 1) Cause of low KH - "Alkalinity" (KH) is linked to calcium (CA). Usually, there is a balanced ratio maintained in the reef tank. When you used up some CA you in turn also used up some KH. Like Calcium, KH were used by corals to form their skeletons (a process called calcification), which are composed primarily of calcium carbonate. 2) Efffect of low KH - affect the calcification process and hence the growth of corals. KH also linked to PH. In general a low KH will result in a low and unstable PH value - which in turn impact/stress the fishes and corals. In worst case, isssue narcosis and dealth.. 3 Optium range of KH - based on my own experience, it depends on the nutrient level of your reef tank a) for ULNS (Ultra Low Nutrient System) like Zeovite the good range will be 6.5 - 7.5 dk Low Nutrient / standard reef tank , the accetable range is 8-11 dk 4) Lesson to learn - keep an eye on your water parameters (mainly KH, CA, MG) and maintain them as constant and possible.. Reading the following for general and immediate problem solving... http://www.advancedaquarist.com/issues/nov2002/chem.htm

This algae cleaning creature I do have some but problem is when they clean n when we clean is total different. They eat n leave marks on the glass,for us we wipe totally clean. So after all we still need to clean. 

Hi all, guess this is the longest decom sale. Initially wanted to keep my tank for fowler but to busy to make plans. Meeting with CO (Mum) and OC (Wife) last night and was told to clear tank b4 year end. Citing the battalion (kids) need more space for training (play) at home. Willing to let go my tank at $250. Not including movers. U have to arrange your own. pls refer pic of my tank. Thanks.

careful bro. using other people's picture without their permission can result pple sueing you for infringement of copyright. this picture belongs to a RC reefer who is based in Hongkong. I know him personally. So please kindly remove the picture unless you have credible grounds especially his permission to use it. Thanks.