sooo for those who werent following, i made the noob mistake of not researching and wound up with rams in with swordtails. go easy, i admit i didnt do my homework! Ive since moved them to a more suitable home, though not one that can necessarily be permenant. its closer to what they need, but not great for the long term. they are in my 20L temporarily with my female bettas at 79 degrees, with driftwood and live plants.
ANYWAY... im not giving up. my current goal is to make a softwater tank with maybe some cardinal tetras, and whatever anyone else can come up with. so here is my question, whats the most reliable, most stable, and most cost effective way to attain a desired Ph and hardness, and keep it where it needs to be?