That's ok, we like listening or make that reading
IMPORTANT though, as far as i know, some cities use Chloramine or other similarly bonded chlorine which does not evaporate from the water like regular chlorine in there....so you should use the neutralizing solutions if you're not sure there's just simple chlorine being used by your city. As for the copper, is there any other reason other than implying more copper is dissolved into the water (from the pipes) with increased temperature? (because i mean, far as I know, if its pure, both hot water and cold water is "H2O"
Well, for the gravel issue, to each his own
I know oscars like many others like to dig etc, but they also like to crap
I know I can keep a cleaner tank without gravel since I've tried it, so I only gave them a very small layer of smooth rounded pebbles for them to play with such that I can still easily clean entire area. What can I say, when it came to tank rearrangement the oscars usually lost, and I got my way
(I recall trying some plants, very 'briefly'...)