Keep canisters on during a water change???

[fishman61]

we have well water and I never turn my filters, rena xp3's, never had any problems

 

[J.Lake]

Always turn my heaters off, kinda obv. Filters stay on, my fx5 is set up so intake is a lil below 50 percent, the eheim is set up even lower. I use the fx5 intake as a reference when i do wcs. I also pre treat water with prime before adding to tank. Has never cause my tank to have any mini cycles

 

[CClump]

not enough to harm humans but bacteria wouldnt stand a chance.

Sorry, don`t agree with you on that.
Most all water utilities now use chloramines in their treatment process.
I know I won`t change anybodies mind on this, but from my own experience, adding the dechlorinator as water goes from tap to tank will not kill off your BB.
Filters running or off.
Believe it or not.
Those who are not comfortable doing this, keep doing it the way you already are.
Those who want to eliminate an unnecessary step, give it a try.

this is how i do it. Now that i have a python that is.
I just dump the prime or stresscoat right in front of where the python is emptying into the tank or sump if im topping off.
Never had an issue.

 

[aclockworkorange]

Agree, Water companies do not have to provide water safe for aquatic life, only for human consumption. I know at various times of the year my local water supply plays around with the levels of chloramine added to the water supply. I give my tap water a full range of tests every 2 weeks, and the 2 most common things I have to deal with are ammonia and phosphates. I require 2.5 times the dosage of Prime at certain times of the year to cope with the level of chloramine added to the water supply. I also notice when extra chloramine is added that phosphate levels and kh increase while redox decreases.

Just curious, what are you using to test for these?

 

[rhodes_96]

Just curious, what are you using to test for these?

The same liquid test kits I use on the aquariums. Redox is done via orp probe hooked up to electronic control hub.
To test for chloramine, normal liquid pool chlorine test kit will do the job.