Need help setting up doser-Calgary

[Coralgurl]

I found what I'm using, it's fauna Marin mag chloride.

I just tested again and alk is still 6, mag 1350.

I must not have mixed the alk right. Will test it.

Thanks for the offer warriorcookie.

Here's another dumb question, and maybe it will make sense after doser is set up, but why the check valves?

[warriorcookie]

The check valves stop the solution from flowing backwards out of the tube. When this happens, the doser turns on for the set time, but has to pull the fluid up the tube again before it starts coming out the end. This means it wont dispense the correct amount of fluid, or none at all. Usually you only need them for some of the cheap 3 roller pump heads. The better 4 roller heads generally dont have that issue.

Have your Alk numbers been fluctuating like that alot? The loss of corals might be more from fluctuating alk rather than low alk.

[Coralgurl]

Originally Posted by warriorcookie

The check valves stop the solution from flowing backwards out of the tube. When this happens, the doser turns on for the set time, but has to pull the fluid up the tube again before it starts coming out the end. This means it wont dispense the correct amount of fluid, or none at all. Usually you only need them for some of the cheap 3 roller pump heads. The better 4 roller heads generally dont have that issue.

Have your Alk numbers been fluctuating like that alot? The loss of corals might be more from fluctuating alk rather than low alk.

Ah, that makes sense on the valves.

Fluctuating alk has only been since I started dosing otherwise it's always been at 6, the coral loss has been on going for a while, however the frog has been dieing over the last few days and is worse on a daily basis.