Hello, I wanted to follow up in this thread for some advice on the above issue.
I got my API GH/KH test kit today, it took 2 drops of solution to get the GH target color and 1 drop of solution to get the KH target color (in both cases the color was very feint and i had to use a white background to verify), so my ~parameters as of this morning were:
ph: 6 or less (yellow on api test kit)
I added 1/2 tsp of baking soda (no fish, only plants in the tank at present), waited ~30 mins, and retested the KH and ph.
ph: 6.4 - 6.6
KH 1-2d (took 2 drops of solution to turn yellow, again very faint color)
I've been following the low-light/low tech version of the EI dosing schedule that Tom Barr has so basically the following:
1/4 tsp KNO3
1/16 tsp KH2PO4 (in the mail, so not added yet)
1/16 tsp micros
1/2 tsp Seachem Equilibrium
I do this 1x a week during water change.
At present, I perform about a 37% water change once a week as the tank cycles and the driftwood leeches into the tank, my goal is to reduce this to about an 18.5% water change every month or every other month.
My question is, how often will I need to add baking soda to the tank under these circumstances, outside of water changes, is anything removing the carbonates from the water (plants are some crypts, java fern, anubias b, anubias n petite and assorted buce)?
I'm happy to maintain a 6.4 - 6.6 ph and KH of between 1-2d unless there's a reason I shouldn't be, should I add around 1/5 of a tsp during my 37% water changes going forward to maintain that, or do I need keep measuring and dosing accordingly?
Again, thanks for your help!