Jenoli42
Member
HI all. Until I bought my kH kit, I thought you just went to a well lit (preferably sunlight to avoid any coloured light interference) area and read the colour of the tube side on, comparing with the chart.
The kH kit says "if you have trouble determining the colour, uncap the tube and look straight down with the tube over a white background."
So I started doing that for the other tests...
The reason I ask is my high pH test is totally different depending on whether you look side on or straight down (same with ammonia). Side on, my hospital tank pH is 7.4. Straight down, it's 7.8. The colours match exactly with each method...
I've been using the "worst" result to play it safe (especially for ammonia), but I'm curious what others do.
The kH kit says "if you have trouble determining the colour, uncap the tube and look straight down with the tube over a white background."
So I started doing that for the other tests...
The reason I ask is my high pH test is totally different depending on whether you look side on or straight down (same with ammonia). Side on, my hospital tank pH is 7.4. Straight down, it's 7.8. The colours match exactly with each method...
I've been using the "worst" result to play it safe (especially for ammonia), but I'm curious what others do.