Hello all, I originally started with three of these fish in a 56 gal with a trio of Heros severus. I lost one in a heat wave this summer, and the other two were getting mauled in the incessant breeding territory defense of the severums. They were, in turn, also mauling themselves--has anyone else observed this sort of intraspecific aggression in these tetras? At this point they are doing fine as "company" fish for my altispinosa (since I only have one!) rather than targets for a spawning pair, and the aggression between them has subsided as well. On a related but slightly more topical note, the severums live in the same chicago lime-water conditions that I mentioned in my previous message. These fish have spawned every 2-3 weeks for the last year but I've never had a single egg hatch. I'd love to see some parenting behavior from them; I suspect the tds levels in my water are preventing the eggs from being fertilized. I don't have the space or money for an RO unit, so I'd like to try using peat to lower the pH and carbonate levels in this tank. I've read the Krib archives on peat use, but they leave out certain crucial details such as the following: exactly how does one boil peat? Without going through three pages of pH and %concentration calculations, can anyone give me a rough dry volume/pH change estimate I might use to determine how much peat to boil and in turn to put into my tank? Should I introduce the peat "all at once", or in stages. Etc, etc. If anyone has gone through a conversion story like this with a tank of this size, I'd love to hear about it (I've got another large tank in the works that I'm planning to set up with A. cacatuoides, and I may as well get used to the water tweaking process now...). Thanks, Sarah LeGates --- Mike & Diane Wise <apistowise@bewellnet.com> wrote: > Jack, > > I think we are talking about the same fish, but my Colombian > Red-fin Blue Tetras > don't seem to be causing any trouble for me. >______ > Jack Betz wrote: > > > Sarah, > > I had a group of 6 of these Columbia Red Tailed tetras and they > were the > > most aggressive tetras I have ever had. > > __________________________________________________ Do You Yahoo!? Thousands of Stores. Millions of Products. All in one place. Yahoo! Shopping: http://shopping.yahoo.com ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!