ph buffer

Hello arduino ppl out there! Selling cuz I'm not so patient anymore. Tried to setup and I gave up. Works fine, reads fine. You just need to write a code and calibrate. This means, condition = used (once for.. 30min). One single package with: 1) Industrial grade PH meter 0-14ph. BNC connector...

Average Parameters & Equipment Temp.......76.5-77.5F Salinity.......1.0255 SG NO3-API.......10-20 ppm range PO4-Hanna.......0.17 ppm pH.......7.50-7.68 observed range Alk-Hanna.......10.6 dKH KH-Salifert.......10.4 dKH Calcium-API.......out-of-range / 580-600ppm (29-30 drops of API reagent 2)...

Hi everyone. I have some pH4 and pH7 buffer solution for calibrating my pH probe, but is there any difference in the various products becide price ? They are all 4.01 at 25°C and 7.00 at 25°C.. I can see that I can buy it alot cheeper from Agro-culture shops than from the Aquarium shops.. Is it...

I have a 7 month old ~3g reef tank containing a faviitees, stone pipe coral, GSP, palythoa, and hydnophora + clean up crew (1 Scarlett hermit crab, 2 blue legged hermit crabs, 5 bumblebee snails and 1 tuxedo urchin). Ever since I’ve started testing calcium, my Hanna reader shows that my calcium...

I added ph buffer to my reef tank and as soon as I dropped it in my corals began to release some white slime so I blown it all off with a turkey baster. I don’t know what else I could do to help them they look in really bad shape and will never used that again. I added enough to just raise ph .1...