Turf Fert in Aquarium - Bad Idea?

DGalt

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Jun 1, 2008
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Connecticut
Ok so this is probably an awful idea, but I figured I'd ask (and I can't find any info on the web, so...here goes).

I work for a plant science professor on campus and today we were using a new fertilizer when I got my terrible idea. So this fertilizer isn't what I would think if I were to think of fertilizer - it was this bag of yellow and white crystal like pellet things. Apparently it's a slow-release formula or something (I'm not too sure - plant science isn't my forte), but here's what the info on the bag says:

Harrell's Professional Fertilizer: Turf Specialty, Professional Turf Fertilizer
22-3-11
50% SCU, MOP, 3% Fe, 240 SGN

Guaranteed Analysis:
*Nitrogen - 22%
1.15% Ammonia Nitrogen
20.85% Urea Nitrogen
Available Phosphate (P2O6) - 3%
Soluble Potash (K2O) - 11%
Sulfur - 33%
Iron - 3%

*9.9% slowly available nitrogen
Derived from:
Polymer Coated Sulfur Coated Urea, Urea, Ammonia Phosphate, Muriate of Potash, and Iron Socrate


So yea...my question basically, has anyone tried using just regular old fertilizer in an aquarium. Is this just an awful idea?

I figure I would only mix in about 1g of the stuff in with the lowest level of my substrate (which will be Schultz - which is inert, which is why I even thought of this...figured that the ferts would leach into substrate and be absorbed by plants and substrate).

So yea...lol. I expect this will be met with a resounding NOOOO but I figured I'd at least ask :grinyes:
 
Not unless you want to quickly kill your fish.
 
Yep as others have stated. It would be a bad idea. Aquarium plant ferts are dosed on a small scale compared to terrestrial plants.

From Seachems site

Seachem Flourish-

Guaranteed Analysis
Total Nitrogen
0.07%
Available Phosphate ( P2O5)
0.01%
Soluble Potash
0.37%
Calcium (Ca)
0.14%
Magnesium (Mg)
0.11%
Sulfur (S)
0.2773%
Boron (B)
0.009%
Chlorine (Cl)
1.15%
Cobalt (Co)
0.0004%
Copper (Cu)
0.0001%
Iron (Fe)
0.32%
Manganese (Mn)
0.0118%
Molybdenum (Mo)
0.0009%
Sodium (Na)
0.13%
Zinc (Zn)
0.0007%
 
yea I noticed that when I compared it to my bottle of flourish.

and there's a whole bunch missing too...

kinda weird, you'd think all plants need about the same type of thing
 
They do need much the same, but ferts fill in the gap from what's in their substrate. Aquarium plants don't need much nitrogen because there is generally lots of nitrogenous waste around in an aquarium from the fish. They do need lots of trace elements because the "soil" they're in doesn't contain much. Terrestrial plants on the other hand are planted in soil full of all sorts of trace elements but a bit short on nitrogen.
 
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