| Q:
How much nitrate will de*nitrate™remove?
A: It is recommended that if nitrate levels are very high
that they be brought down to at least 20 ppm through water
changes before using de*nitrate. At that point de*nitrate
will bring the nitrate levels down to 4 – 5 ppm after
several days of use. Since de*nitrate™, Matrix™,and
Pond Matrix™are all biological support media,
they do not actually ever exhaust, but they can grown less
efficient with use by pore clogging. Prefiltering the water
before it passes through these products will extend its
useful life.
Q:
Seachem website says that deNitrate can reduce nitrates
in a direct water flow of 50 gph (or less). What makes Seachem
Denitrate effective at a flow rate of...lets say 30-40 gph???
A:It is the porosity of this material
that allows it to function at this rate of water flow. As
water passes through this media, any oxygen is used by the
aerobic bacterial that lives on the outer crust of this
media. As water enters the inner crust of this media, it
will come in contact with the bacteria groups that live
in oxygen deficient conditions of the inner portions of
this media that naturally consume and dispose of nitrate.
Q: You state that the flow rate through
de*nitrate™ should not be more than 50 gallons
per hour, but most filters on the market flow much faster
than that. How the heck do I get such a slow flow rate?
A: The best way to accomplish this is with the use of a
flow through (aka "dummy canister"). Other alternatives
include water restriction to a regular canister, placement
in a sump, or a box filter with a restricted intake.
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