On Friday 16 May 2003 04:42, you wrote: > Is it the same as potassium? I was under the impression > that K didn't do much for algae, at least not in the wide > range of concentrations that one might use to the benefit > of the "higher" plants. Or maybe I'm missing your point > here entirely? I'm not sure, but you may have missed my point. The point was simply that if you run your tank out of *any* essential nutrient then you will have sickly plants. That includes phosphorus. That includes potassium. regarding borax: > Is it harsher than a weak household bleach|water ( 1|20 > )solution? I doubt it. But then I don't recommend bleaching things, either. Roger Miller ------------------ To unsubscribe from this list, please send mail to majordomo@thekrib.com with "Unsubscribe aga-member" in the body of the message. Archives of this list can be found at http://lists.thekrib.com/aga-member/