[prow]

aaahhhh i think the issue most have, reason for adding Ca+ later, Warnberg stated already. most salts dont have the correct amount of Ca+ in the mix or if they do the alk is low. so over time with water changes the Ca and alk in the tank gets off. every now and then you have to add/dose to bring it back to balance. unless you dose your water your using to change to match the levels of the tanks Ca+ and alk you will need to correct it after a few water changes. the normal water changes of 10-20% will only effect the tanks levels slightly. so over many water changes the tanks levels will slowly get off. if you change 100% of you water it will be off the same principle applies to water changes but your just changing 100% of the water bit by bit. i hope i said this so it clear.


o ok what to do. either bring the new water during changes levels to match the tanks levels or dose the tank every now and so its balanced. its still much easier to use a Ca+ reactor and cheaper than dosing other ways and you only have to add more Ca every few months, much easier than daily dosing. IMO if you never change the water the Ca+ and alk will remain constant. thais if the reactor is set up right.