At 11:07 PM 2/13/99 EST, you wrote: >my >water values are as follows: ph=6.5, gh= 90 ppm, kh=4 dkh. What would be the >easiest way to get my gh to optimal levels. I have an RO unit which I haven't >used in 4 months (for a reef tank). But would it be easier just to set up a >30 gallon rubbermaid with peat filtration. If you use RO then you can still use peat for pH adjustment, etc. If you use peat you will end up with pretty tannic water just getting rid of the calcium. Not all species like THAT much tannin. -- Dave Gomberg, San Francisco mailto:gomberg@wcf.com http://www.wcf.com/co2iron ----------------------------------------------------------------- ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@majordomo.pobox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@majordomo.pobox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!