Ok, so my water situation thus far. (It's so good to be typing on a computer again!! using one at work lol) Anyway, my tap water is indeed softened with salts, and comes in at a GH of 35ppm and pH of 7 directly from the tap. My well water, on the other hand, is nice at roughly 200-250 ppm GH and a pH of still close to 7. Having learned about softened water on my Cory Tankmates post, I was going to use solely well water in the tank, though wasn't sure how I was going to bring it up to heat before adding it in every week.
However, I found that when taking the well water from the spout in the basement, it gives off a rather strong smell of rotten eggs (sulfur). I talked to someone about it and he said you can just aerate the water to release the sulfur from it. So, I got a bunch of five gallon buckets (buckets are dark blue) and some air stones, pump, etc. Well, when I came down the next morning the water was very discolored and I couldn't figure out why. I found, after much research, that aerating water with iron in it will make the iron precipitate out more rapidly. The discoloration I was seeing was red from the iron sediment. So, I left the buckets to sit for a few days hoping it would settle out, but it didn't.
When I finally had some time off to run down to the fish store and get my plants, I decided I needed to get things going. So, I bought the plants, substrate, etc and got everything ready. When I dumped some of the well water out there was a lot of red sediment on the rim and bottom of the bucket. My main concern being that it would settle out on my substrate and turn everything red. So, I figured I would use tap water mostly on the initial setup, and I still added in two of the aerated buckets of well water.
My current plan is to do weekly water changes with well water to increase hardness and get things back on track. If I add it directly, I shouldn't have to worry about the iron precipitating out as much, though I am still concerned it will do so in the tank with the current disturbing the water surface.
The dilemma comes when I add in fish, because the well water will obviously be quite cold, and if I let it sit to get to room temperature, the iron will eventually precipitate on it's own (this happened in the buckets that weren't aerated...it still discolored and precipitated after time). Also, if I add it straight in, I am afraid the sulfur will kill my fish. My current thoughts were to fill a bucket at least 3/4 full with well water, then add warm water from my shower to up the temp a little and also aerate it a bit, then add it directly. I'm not sure how this will effect things overall. But, I'm not sure what else to do. If I let it sit for too long I will end up with a bunch of iron sediment, but if I don't I worry about sulfur.
Thoughts?? I really don't want to get an RO unit.