water chemistry

Hi I'm new and have a question regarding PH lowering. My tap water normally comes out at 7.4 and I have been told that 6.5-6.8 max is optimal for the fish I keep. PH has never presented an issue for me as the fish I have have always appeared to be fine in the water range I currently have...

Twenty years ago when I wanted to set up an aquarium the methods used then are outdated probably. Back then after the tank is filled the water it's left to sit for 24 hours so the __________ would evaporate. I don't remember what was supposed to evaporate. After the rocks are added you get a...

my ph out the tap is usually about 7.4, i dont know what my gh or kh is unfortunately. i'm setting up a Tanganyika tank. 1.my first question is should i even bother messing with my water? 2.if i do decide to change my params my plan was to just add both baking soda and epsom salt to the...