"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

--
Boomer

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"Pszemol" wrote in message ...
: "Boomer" wrote in message
...
: That is not low at all but what NSW is
:
: 6.5 / 2.8 = 2.32 meq / land NSW is about 2. 25 meq/ l
:
: Seachem recomends keeping alkalinity at higher levels than NSW.
: I am not sure, but it is to fight higher level of polution with acids
: normally occuring 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.
:
: My test for alkalinity counts drops to change color and it
: reads 5-6 drops, which translates to 2.5-3 mEq/l, so
: higher than NSW but I have a lot of hair algae with
: NO3 at the level of 10-15mg/l. Also looking for some tips
: to rise alkalinity or other ways to keep algae under control.
:
: Doing frequent water changes does not help much. NO3
: quickly stabilizes at 10-15mg/l level ans somehow gets
: to balance at this level.
:
: I control Ca levels with SeaLabs #28 and it is at high
: 450-480mg/l all the time. Tried SeaLabs #15 with no
: visible results.