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Water Test results
I have now tested my water twice at 7 day intervals. The test occurrs just
prior to a 25% water change. I'm a little curious about the results.
Item: Test # 1: Test # 2:
===== ========= =========
pH 7.8 7.8
Ammonia 0 0
Nitrite 0 0
Nitrate 0 0
KH 6 degrees/107.4 ppm 5 degrees/89.5 ppm
GH 8 degrees/143.2 ppm 9 degrees/161.1ppm
Phosphate 0 ppm 0 ppm
The phosphate test is a Lamotte Test kit. All other kits are Aquarium
Pharmaceuticals. This tank does not use C02 (although a kit from Dave
Gomberg is in shipment). I also have ordered a test kit for Iron from Dave.
I currently use Tropica Mastergrow for the fertilizer.
There is some plant growth on a daily basis although the largest spurts seem
to occur about the second day after a water change.
Question # 1:
I've searched the Krib for an article listing recommended optimal KH/GH
values but so far without luck (I know this would vary according to plant
types but at least a minimum/maximum range would be nice). Any thoughts on
these values above?
Question # 2:
I understand that the limiting factor in a tank can often stop plant growth.
I am quite surprised to see 0 Nitrate and 0 phosphate. Thoughts? I think the
plants are probably eating Ammonia rather then producing Nitrate but the
lack of Phosphate is a surprise.
Question # 3:
Whatever I should have asked but didn't.
As always I appreciate your help.
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