PDA

View Full Version : Calcium, Alk, Mg & pH What's better for water stability?


MizTanks
08-18-2010, 09:32 PM
Please explain reasons.

What's better for water quality and stability? Open top tank or closed?
taziam10797
08-19-2010, 06:41 AM
In my opinion open top is best for water. It allows the flow of oxygen into the water. Good for water, bad for jumping fish.
XSiVE
08-19-2010, 08:55 AM
IMO open top for better gas exchange. If you close the top of the tank, the pH is going to be lower due to co2 buildup.
bigbill
08-19-2010, 09:03 AM
IMO open top for better gas exchange. If you close the top of the tank, the pH is going to be lower due to co2 buildup.

+ 1 on this
adalius
08-19-2010, 09:51 AM
Mesh top is my favorite.
MizTanks
08-19-2010, 09:55 AM
Thanks guys. Explains why my ph has been so low, 7.6
I'll be propping the hood open from now on.
Manoj's Reef
08-19-2010, 12:01 PM
+1 on open. Make sure you compensate for lost water.
XSiVE
08-19-2010, 01:14 PM
+1 on open. Make sure you compensate for lost water.

oh yeah, forgot to mention that you will definitely have more evaporation, so depending on how often you top off, you may have a little instability in salinity level.. but if you're asking about this for your 26g setup, theres probably enough water volume to not have to be at all concerned.