01-04-2021, 09:44 AM
Join Date: Apr 2005
Location: Brentwood, CA, USA
iTrader Positive Rating: 100%
| | Testing CaCO3 Effect on Plants
I found a cheap source of calcium carbonate on Amazon, so I want to see if adding calcium and carbonates to the water will improve plant growth, when STS substrate has stripped most of the original calcium and carbonate from the water. I added one teaspoon of CaCO3 to the water on the left side tank, raising the KH from 1 dKH or less to 3 dKH. The effect on GH was much less, but I'm still testing GH to be sure of that.
My expectation is that the increased carbonate will increase the stem plant growth. No CO2 is being added, so there is likely less than 3 ppm of CO2, so the added carbonate may help stem plants.
Each tank has essentially identical plantings.
Last edited by hoppycalif; 01-05-2021 at 10:41 AM..
Reason: Replace photo