First off ...... i wouldnt change any pH in your tanks until you see what the pH of the water that the fish came in..... match that for now and then you can adjust the pH to where ever you want it to go.... As for planted vs barebottom tanks..... truly makes no difference which you use... I put my fish that i bought from Oliver into barebottom tanks until they adjusted to my water then I moved some fish into planted tanks..... most are still in barebottom tanks with lots of flower pots, plants in plastic pots... no gravel.... lots of cover so the fish can hide from each other if necessary. Word to the wise on the Elizabethae.. I bought 2 pairs from Oliver.... keep them seperate... the males really dont like each other..... mine chased each other alot.... if you get multiple pairs.... put one pair to a tank.... you'll be happy when they both survive and you dont lose one fish..... I still have 2 pairs!!!! You will find that Olivers water is generally soft and near neutral. I had no problem getting my fish use to my water which is slightly acid and very soft.... Not like buying fish from someone keeping them in hard alkaline water and not telling you about it..... Always test the water out of the bags from the fish you buy!! Good rule of thumb.... Good luck with the Canditi..... I didnt know he had any of them, must have gotten them in recently..... I'll be in Montreal next week, have to give Oliver a buzz.....8-) Tundra John ----------------------------------------------------------------------- -- 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. apisto-digest@listbox.com also available. Web archives at http://lists.thekrib.com/apisto Trading at http://blox.dropship.org/mailman/listinfo/apisto_trader