The ratios were right around 65/35 ProBloom to CalMag last res change.

One thing to note:

I drain my res by connecting a hose to the sprinklers and it pumps out the water like 2 gallons a minute or something. The thing is, it doesn't completely drain the water.

In fact, the last time I changed nutes there was 350 PPM of "waste ppms" that could have been any ratio. So, there is around 950 ppms of 65/35 Probloom / Calmag in there now.

I will have the ratio at 60/40 bloom / calmag tomorrow when I flush it. This time, I will drain the water as much as the pump does. Then I will add in 15 gallons of water. Then I will drain that fresh RO water all out and the resulting ppms should be much less after I fill it up again.

I now know the answer to every question I've had so far!

I just need to add more of that precious RO water!

I think for my Birthday I will ask my parents for an under the sink RO unit