"Boomer" wrote in message ...
"I am not sure, but it is to fight higher level of pollution with acids
normally occurring in our closed systems in our fish tanks.
I am not able to keep alkalinity high neither and I am also
fighting with chronic too much algae"

Yes we usually recommend levels of 3.5-4.5 meq / l. If your alk is going down to things
are happening. The load is high and using it up and/or corals need it to make CaCO3. It is
normal for many systems to have/get a lower Alk for these reasons. Alk will drop much
faster than Ca on normal conditions in some tanks, as there is much, much, more Ca in
relation to Alk. In other words if your corals removed all the Alk your system had to
0Alk, to make CaCO3, where the Ca was 400 mg/ l , the Ca would only drop to about 375 mg /
l Ca

Get some Baking Soda to raise the Alk up to 3.5

The thing is in my case I do not have too much corals, no hard ones in a matter of fact,
but I have heavy load of fish: quite a big tang and three other small fish in 30 g tank.
How should I keep up with rising alk in my case? Will baking soda work for me?