rain water

Hello, As you’ve read; I’m now keen to take the shift into introducing rainwater into my water changes for my 200l freshwater planted tank. I live in a very hard water area. The GH (20) and KH (16) are way over the comfortable limit. Would greatly appreciate any feedback on my plan here: -...

Hello, me again, I was wondering if rainwater is safe for fishes or not/is there any chemical in rainwater? @Colin_T

I just put a bucket (one I use for water changes) out in the rain and I was wondering if that's ok for the fish tank I have? I had to do a partial water change (Done one through the week already) because my nitrAte was 40 and my ammonia is somewhere between 0 and 0.25 and i'd like them lower (as...