[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Some different long-term macro sources
Here are some products at the local nurseries that I haven't heard much,
or any mention of (I'm thinking of trying them as amendments to peat, oak
leaf mold, potting soil, etc., in pots, for submerse crypts, in a very low
fishload tank:
-"Rock Phosphate (ingred: soft rock phosphate)"- as I recall one brand
was 0-3-0, and the other was 0-2-0, and it's only other listed element was
Ca.-16%. I think it was described as a mined marine sediment. Sounds like
alot of Ca for the amount of P it gives. _Suggested reapplication time in
terrestrial use is 4 to 5 years!_ (It sounds granular/chunky in the box).
That's a long time compared to Bone meal, (suggested apply twice a year,
terrestrial use), so maybe it would be a good long term source? If it is
marine, a risk of toxic trace elements if used in acid substrate? And, does
it have carb/bicarbonates?
-Bone meal (steamed or boiled)- I've seen some discussion of it in the
archives- sounds like a good possibility, and provides some N. Blend with
above? Also high in Ca? Carbonates?
-Cottonseed Meal- one brand has 6-2-1, described as natural slow
release, but suggested terrestr. reapply is every 2 mo's, so maybe this will
break down pretty rapidly? But would it be slower than composted or
uncomposted manure or worm castings?
-Greensand- a K source- saw one at 0-0-3. -found brief mention in the
archives- again a marine sediment- Jamie Johnson's nice substrate analysis
breaks it down- from what little I can judge, I don't think it would be a
problem at neutral ph, but how about in alot of peat?
Some NPK blends could be done with them.
Any feedback?
Zach K