Fishfinder1973
Fishaholic
Looks like 6,which would correspond with the API result.Thankfully it didnāt go lower.
Iāve accidentally hit something on my iPad and itās changed the typing style hahaha.
When I changed the water on Saturday the pH was a tad lower than 6.4 a couple of hours later.
The only thing I changed in the tank was the substrate,gravel to sand.I do have a couple of bits of bog wood,but I had a huge piece of bog wood in it before that was almost the length of the tank and it never affected the pH.
The pH then,was stable at 6.6 or 6.8,canāt quite remember,but it definitely didnāt drop.