another alternative is vinegar. That is what I am using instead of building up the Phosphate... and the plants seem to love it.
Now let me get this straight;
You put the lime in the water can,
It drank them both up
You put the lime in the water can,
It drank them both up
You put the lime in the water can,
called your doctor, woke him up, and said,

"Doctor, ain't there nothing I can take"
I say, Doctor, to relieve this belly ache?"
I say, Doctor, ain't there nothin' I can take"
I say, Doctor, to relieve this belly ache?"
.... put the lime in the water can... shake them all up...
lol.. sorry, it was either this or get that song stuck in my head. Lime is a natural acid... shame to waste it by not mixing it with some Rum... but it would have to be safer than battery acid... and I have heard of people using it to lower ph.

Vinegar would be much cheaper though.

Emmie