Ok
So Mr Bumble is still with us and after a few days watching and reading up online, him floating at the top of the aquarium and looking schriveled and green is the way this one sleeps

once the lights go on he returns to the rocks and comes back to his normal colour. He is still hiding but starting to come out more, I put in some river shrimp to see if he'll eat them but up to now he's ignoring them but still feeding on the brineshrimp.
The glass is still getting green and this is beginning to concern me, I got a very good IMHO test kit off line (Nutrafin) did a full test today and the results are below. Also did a 25ltr water change last Monday.
AMONIA - 0.1
NITRITE - 0.1
PH - 8.1
PHOSPHATE - 0.25
NITRATE- 5
IRON - 0
SALT - 1.023
The ones below needed one drop per shake and then watch to change colour, think I did them right but came out with the following results
GH - 23 drops - 460 mg/l
KH - 15 drops - 150 mg/l
Calcium - 27 drops - 540 mg/l