On Wed, 14 Jul 2004 13:56:52 +0200, "Ali Day"
bubbled forth the following:

Hi,
I have one surviving guppy left in my tank (the others died over the years).
My pH used to be set around 7.2, but I brought it down to 6.5 a year or so
back for the discus. I am worried about him being on his own and having an
identity crisis, as I think he now believes he is a Rummy Nosed Tetra, as
that is who he schoals with.

I asked my LFS (who know my tank) about getting companions for him, and they
said that he has become acclimatised to the pH over the years, as I brought
it down, and if I bought new ones they wouldn't survive too long, and it
would be best to leave him on his own. Unfortunately I have a girlfriend who
thinks this guppy should have friends.

I've had a look round the web and cannot find a definitive answer on
recommended conditions.
But what I would like to know, is does anyone have guppies in a discus tank,
and how do they fare?

Cheers

A


http://www.thetropicaltank.co.uk/Fishindx/guppy.htm says guppies like
water that is "Medium hard to very hard, and alkaline - pH 7.0-8.5"

That being said, my water is very soft (2 dKH, 6 dGH), and ph of 6.8.
My 3 guppies, 1 M 2 F, have become 80, so I would say they are doing
just fine. Half of these survived a severe ph crash (below 5 for 2-3
days, 6 for 2 more days as I brought the ph back up) with no ill
affect

If the ph at the LFS is less than 7.0, you should be able to acclimate
them to your ph by slowly mixing in your water over 2-3 hours as they
float in the bag. Anymore than .5 would probably best be done in a
Q-tank over several days. If you don't have a Q-tank, this might be a
good excuse to get one:-)

As always, ymmv. Some strains of guppies seem indestructible, others
go belly up at the slightest change.

HTH

Jerry