chemisty

So i need assistance. I tested my KH on February 1st. It took 19 drops to turn to the end color. Today, feburary 5th, I'm testing my KH again and it took 9 drops this time and it was the overdose color. The instructions say some math/ number stuff. And it's completely gibberish to me. Can...

Hey, Im just wondering does anyone know how the Hanna Alk checker work? Chemically? As I understand it alkalinity is the tolerance to the change in pH, but the hanna checker only reads the spectrum from control seawater (no regent added) and the final one after the reagent are already added. So...

I have a 65 gallon and it’s been set up for a few months now. I had two clowns, blue sided wrasse, orange spotted goby, Pygmy dwarf angel and some inverts as well as some corals. I did a water change last night and then tested everything because I had an order from WWC coming today. My...

Hello everyone! I'm just about ready to order a small CUC for my 10 gal tank (thanks to you guys I know what to buy) but I have one last concern before I purchase. My alkalinity is about 80ppm and I don't think that's good enough. My pH is also ~7.8 and I'd like to get it to 8.1-8.4. I've heard...