I note you have given the times that you are dosing but have you ever checked the volume that is actually being delivered per dose? Even precision dosers can vary, I would check this to make sure. With your system you may have to alter the time of dosing for each product to make sure it is delivering exactly what you want.

I worked with a computer controlled nutrient delivery system for my Masters and had to check delivery of each channel before every experiment (180 channels) and input into the computer to ensure even dosing across the system.

Anyway I hope you figure it out.

Steve St RCE tested my ph.... 8.2. So my test is pooches.

Going with the theory that my bulk dosing was adding more and although testing at 100 alk... The consistent 100 is lower with my doser than when dumping large single doses.

Make sense? Back to upping my alk manually.

I would try and dial in the doser, may take a couple days or weeks, but once you have it you wont be disappointed.

Adding any chemical in large doses, at one time, is asking for trouble IMO.

must be something else. YOu would need major swing that would be obvious in tests, not what you mention.

Maybe you should test for something else, like copper.

I have had my aquarium for 2 years and half and I never checked the PH, and I am sure it is all over the place, because my KH sometimes get low, but yet my SPS are doing great. Only time I had die off and bleachign when when I used Kent carbon with copper and contaminated my tank.

It took 2 months to recover and it is still not as it was before.

If anything, dosing one large single dose will create far more swing, and dosing with a pump had brought real stability to my tank. I don't see how dosing a single dose could be any better, quite the opposite.

100 kh is low? my tank is at 7 kh.

If I had 100 kh in my tank, all SPS would surely die.

what test are you using?

lol 100 is his measurement and it isnt in Dkh.... 100 mg/l works out to 5.6 Dkh... which is low....

Steve

Copper test negative.

I have dosed bulk for six years. This issue started when the doser began it's work. Anyone who has seen my tank knows it does great. Until now.


Ph is fine, as mentioned.

Thanks steve.

Oops.