At 01:16 AM 5/1/1998 EDT, you wrote: >I have not seen any postings on what to do if the water is too soft. >In New York City, water comes from the tap at about 6.8pH, <1 GH and <.5 KH > the problem is that it is very difficult to maintain a stable pH. Add a decorative seashell to your tank. It will slowly dissolve (over decades), raising GH, KH, pH and a whole bunch of other Hs. ;^)> If that is too weak a medicine for you, try a LITTLE crushed coral gravel in a net sack (so you can remove it if necessary). Good luck. - -- Dave Gomberg mailto:gomberg@wcf.com FormMaestro <http://www.wcf.com>