I have recently set-up an oxygen cylinder (+ regulator and flowmeter) and micro-bubble diffuser (don't worry, the diffuser has not been set to a dangerous rate). It is currently off but I did run it for a few hours and registered a minor change in DO value. Mind you, I am not too confident in these ...

Informative. Thanks guys.

Mei.

:? Muddy? No, it's more clear. :) Thanks for that. I've just been trying to compare the measurements on this site (for triggering spawns) with the conditions in my own tanks. I've been breeding the common plecos that we have here in Aust, on and off. But have decided to take a closer look at the ...

Hi, Although this is my first post on this forum, I have been following the site for quite a few years and have found such a wealth of knowledge in your posts. If someone could help me out with the following, it would be much appreciated. I am often confused by the use of the terms TDS, conductivity ...