A KH story that may be of some value to others. - The Planted Tank Forum
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post #1 of 1 (permalink) Old 01-12-2005, 11:15 PM Thread Starter
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A KH story that may be of some value to others.

I recently ran out of CO2 in my 65G tank and did not have a chance to get any for several days, so I opened up my old Carbo plus unit, thinking that something is better than nothing.

Well, as expected the Carbo did very little, if any to help.

When I got my CO2 tank filled and hooked up again, after 48 hrs I took my water measurements and found

PH 6.8 (where it normally is for a CO2 rate of 1B/Sec)
KH 2 (!!)
GH 7

I was a bit taken back by the numbers, but realized that Carbo plus "chews up" KH during its operation. Please note that no water change had taken place.

I started adding baking soda to raise the KH back to 5 ~ 6 where it typically is, but I was impressed how much damage the Carbo unit did.


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65 gallon, Eheim 2128,Eheim 2026, Hagen surface extractor, 18 watt UV Turbo Twist, M3 Pressurized CO2, 5 lb CO2 tank, AM 1000 Reactor, Laterite, river gravel mix.

90 gallon under construction. Eheim 2128, Eheim 2026, Coralife 4x65W, AM 1000 reactor, JBJ Pressurized CO2, 5 lb CO2 tank, Turbo Twist 6x UV, No substrate yet.

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