Received from dale.chatham at 3/23/2019 10:08 PM UTC:

>https://smile.amazon.com/JARDLI-Diffuser-Counter-Aquarium-Planted/dp/B01N36MAO4/ref=sr_1_1_sspa?keywords=co2+sintered+glass&qid=1553378698&s=gateway&sr=8-1-spons&psc=1


This would be GREAT provided the pressure needed to make a decent amount of
bubbles can be supplied by a simple vibratory fish tank air pump. Since this
is being touted by the supplier as something to use in a pressurized CO2
infusion system and since it's designed to let you count bubbles of gas
(below the fritted membrane) one at a time, I bet it needs a higher pressure
to operate than a fish tank pump can provide, or else it will probably
produce far fewer bubbles than expected/wanted to rejuvenate cupric chloride
solutions.


>Consider something like this:
>https://smile.amazon.com/Homasy-Submersible-Aquarium-Fountain-Powerful/dp/B00EWENMAU/ref=sr_1_4?keywords=submersible+water+pump&qid=1553378827&s=gateway&sr=8-4


Looks like that pump has a sealed impeller housing with no shafts or bearings
that might leak. Probably worth a try for anyone who wants to agitate by
pumping liquid vs injecting bubbles. Hard to tell if there are any exposed
metal parts, but wouldn't expect there to be in an aquarium pump. I believe
I'd put this pump in an empty bucket in case it does leak, though.

Jim H