i did say around 0.5 its normally a little less i estimate on my own jugment right or wrongly. 9 times out of 10 am very close
as long as i get a reading 12 hours later of below 0.25 i know am fine. if i need to do a extra water change then i will do one. sorry maybe i should have said 20-50 % WC
Chloramines are derivatives of ammonia by substitution of one, two or three hydrogen atoms with chlorine atoms
from seachem website
Prime works by removing chlorine from the water and then binds with ammonia until it can be consumed by your biological filtration (chloramine minus chlorine = ammonia). The bond is not reversible and ammonia is still available for your bacteria to consume. Prime will not halt your cycling process.
Any type of reducing agent or ammonia binder (dechlorinators, etc) will give you a false positive. You can avoid this by using our Multitest Ammonia kit (not affected by reducing agents) or you can wait to test, Prime dissipates from your system within 24 hours.