How often/much iron do you add?

"Doug" wrote in message
...

Hey all!

Quick question: How much iron/potassium supplement do you add to your
planted tanks?

I've got a youngish, planted (about 16 species) 30-gal with 80 watts
(400 Lux) broad-spectrum fluorescent lighting, DIY CO2, and a light to
moderate fauna load with a latterite enriched substrate. This tank is
just starting to really take off and I'm finding it hard to keep the
iron concentration up. I'm having to add up to between 10 and 15 mL per
day of (pick your favorite iron/potasium supplement) Leaf Zone (0-0-3),
which instructs 5mL per 10gal once a week. Just curious how hungry some
of your well planted tanks are. Perhaps I've got something that just
eats it up, like my Hygrophilia corymbosa or perhaps Ceratophyllum
demersum or Aponogeton crispus?

Anyway, what is the consumption on your tanks?

-Doug

I found it impossible to keep my iron levels at the correct amount (0.3
ppm) using just LeafZone, I had to supplement it with Hagen's "Plant Grow -
Iron Enriched" (0.15-0-0). For my tank I now use 3/4 LeafZone and 1/4
PlantGrow once a week and my iron levels stay spot on. It should be noted
that my tank is "low light" at only 2 watts per gallon. If I use PlantGrow
by itself my iron levels get too high.