general hardness

At first my tank had low GH after I removed the driftwood wood and my Caridina shrimps died. After trial and error to see what caused the GH dip, it turned out to be the removal of that driftwood. That driftwood wood is much darker in color than the other driftwood I had. It reeked around GH 5...

Hello! I’ve had my tank about a year now so I’m relatively new to the hobby. In the past I’d only ever tested ammonia, PH, nitrite & nitrate but recently I decided to test KH & GH as I’ve had a couple of guppy deaths. I’ve read various articles but honestly I’m still none the wiser on what safe...

I've attached a photo of the kind of rock I have in my tank, would this affect the water hardness in any way? only other things I have in my tank is plants and a cave and some smooth pebbles. My water hardness is normally around 20. I've been trying to find a type of cory which will be suitable...

Hi Everyone I'm looking to build my empty nano (21 litre/5 gallon) into a potential shrimp tank. I'm looking to set up something simple so I can work on some core skills in the fish keeping world. I took a look at my local water provider and the stats they have on the water in my area. The...

I have Discus, silver dollar, swordtail, kuhli, betta, ram, goldfish, pleco, blackghost knifefish, Green knifefish, angelfish. The questions is which fish need soft/hard water and how do I softened or hardened water? My GH is 3 dGH KH is 3 dKH pH is 7.5.

I contacted my local water provider and recieved some information about our local water supply that I use for my fish tank.   I attached a small section of what they sent me.   Would someone help me understand what these values mean and how they apply to general hardness/alkalinity requirements...