PS has virtually no NH4, it's all in the clay aqua soil.
PS has mostly NO3.
ADA As has very little NO3.
Thanks for the clarification, I've been trying to figure that out!
PS cannot bind NH4 due to very low CEC, whereas clay has a very high CEC and binds NH4. NO3 cannot be bound easily, hence water changes and issues with ground water.
Help a newbie (I hate that noob thing) out, What's CEC?
Peat lowers pH, this is not their design, it's a simple thing folks have used for 60 + years or more in the hobby.
The newer batches of AS have lower NH4.
But can vary batch to batch also.
No matter, large water changes, 2-3x a week are the typical routine for the 1st month or two as you say, then no issues after.
I think ive finally reached a point of stasis with the leaching of the substrate after a large (80%) water change last night. Looking forward to having everything balanced out and I greatly appreciate your knowledge and guidance as science does not come easy to me!