RE: [AGA Member] DIY yeast bottle cap glue toxicity?

["Troy Hendrickson" <t_hendrickson@qwest.net>]

While I can't speak to the issue of toxicity of the glue you're using, I can
state that there are better ways to make DIY generator. Most hardware stores
have brass 1/8" or 3/16" hose barbs with 1/8" or 1/4" MNPT threads and
O-Rings that will fit over the threaded portion of the fitting. Simply drill
a hole just slightly smaller than the diameter of the threaded portion and
screw the fitting into the lid until it compresses the o-ring slighty
between the ridge of the fitting and the top of the cap. Sealed, no glue,
last forever. I have a couple already made up, drop me a line at
info@glass-gardens and I'll be glad to send them to you since I don't use
DIY anymore

Troy Hendrickson
www.glass-gardens.com

-----Original Message-----
From: owner-aga-member@thekrib.com
[mailto:owner-aga-member@thekrib.com]On Behalf Of Heather J Gladney
Sent: Friday, June 18, 2004 10:38 PM
To: aga-member@thekrib.com
Subject: [AGA Member] DIY yeast bottle cap glue toxicity?


How important is trace toxicity from glue securing airline barbs in the
caps of DIY yeast bottles?
I had several combined factors that may have killed 4 of my bigger fish,
such as pH and heater/room temp overheating, but also using a different
glue on the bottle caps for the new yeast batch.
I'd been using silicon before.  The odd thing is, puttin the new caps on
a different tank, fish are fine.
I let the Outdoor Goop for 5 days, but it still had a very faint
plasticky odor.  In a previous experiment with it on the same tank, I'd
let it outgas for more than 2 weeks, to no obvious ill effects.  My
sister commented that Outdoor Goop is really toxic, she thought there
were warnings to parents about not letting children get hold of it at
any time.  It isn't the same as the regular indoor Goop.
Goop was recommended on one of the other aquarium CO2 lists, but without
specifying which type of Goop.  It does hold the stem and cap together
really well.  Normally I'd prefer the silicon, but over several months I
found silicon is not adhering to the plastic of the bottle caps well
enough to hold up when I'm banging bottles about underneath the tank (as
carefully as possible, but still!).
Should I try gluing the next batch of bottle caps wiht it and let it air
longer, or give up and go back to silicon?  Silicon isn't nearly as
secure or solidly attached to the plastic.
 I was also wondering if I could get away with gluing the silicon first,
then layering Outdoor Goop over it only on the outside, or if I should
go buy the regular Goop (not outdoor), or if I should do the silicon
then layering with the regular Goop.

Thanks!
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