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Re: [APD] Substrates and Dosing

>>As for needing to add ferts on an ongoing basis, I think Diana Walstad has
pretty good information that a soil underlayment tank can do well without
added ferts . . . >>

Ms. Walstad's approach relies on heavy feeding of a large number of fish to
provide the nutrients after those in the substrate are depleted.  If one
doesn't feed enough or if the plants aren't pruned enough, nutrient
deficiencies develop and dosing is required, although not nearly as much as
is required in high light tanks.

Perhaps overfeeding the fish is another form of dosing?

Next to Mr. Barr, I think that Ms. Walstad is quoted more often than any
other plant authority, and with good reason.


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