Re: [APD] P2O5 Triple Superphosphate and other fertilization questions

[zebu <corcos13 at yahoo_com>]

you are lost


--- Bill C <w_r.c at usa.net> wrote:
> Can P2O5 Triple Superphosphate (0-45-0) be used in
> place of KH2PO4?
> 
> If so . . . how much would I use in my 55 gal. tank?
> 
> The tank has been set up for about two months and is
> illuminated with two sylvania 40 watt sunstick full
> spectrum 5,000 K fluorescent lights and two 40 watt
> sylvania gro-lux/aquarium wide spectrum fluorescent
> lights in shop light hoods.
> 
> Substrate is 100% Flourite.
> 
> I do not have CO2 yet . . . saving up for the tank
> and regulator, but it will be a while before I can
> get the system.
> 
> I live in Gainesville, FL and the report that the
> water department sent me indicates that our water
> supply has 26.8 mg/l calcium, 26.0 mg/l chloride,
> conductivity (umhos) 330, magnesium 15.2 mg/l, ph
> 8.75, sodium 9.47 mg/l, sulfate 82.0 mg/l, TDS 220
> mg/l, total alkalinity 41.0 mg/l, total hardness (as
> CaCo3) 136 mg/l, orthophosphate none detected,
> nitrate none detected, and nitrite none detected.
> 
> The tank currently contains 4 black skirt tetras, 3
> neon tetras, 2 cardinal tetras, 4 otocinclus, 3 cory
> catfish, 3 black mollies, and one crayfish.
> 
> For plants I have moderate plantings of mexican oak
> leaf (growing very well), rottala (growing fairly
> well), a little java fern (growing fairly well),
> several cryptocoryne (slowly putting out new
> leaves), bacopa (hardly growing at all), caboma
> (doing poorly), anacharis (growing fairly slowly),
> water sprite (floating plants growing better than
> those planted in substrate), and a new patch of
> glosso that seems to be doing well.
> 
> I ordered fertilizer additives from Homegrown
> Hydroponics . . . MgSO4 (magnesium sulphate), K2SO4
> (potassium sulphate), KNO3 (potassium nitrate), and
> chelated trace elements (I made a solution of 1
> tablespoon trace in 300 ml of water.)
> 
> I have been doing 50% water changes every Monday. 
> Then immediately add 1/4 teaspoon MgSo4, 1/4
> teaspoon K2SO4, 1/4 teaspoon KNO3, and 7 ml of the
> trace solution.  Then on wednesday and saturday add
> 1/4 teaspoon KNO3 and 7 ml trace.
> 
> I have not yet had a source for PO4 and that is why
> I was wondering about using P2O5 Triple
> Superphosphate (0-45-0) in place of KH2PO4.
> 
> I have had a mild series of algae types on the
> plants, substrate and/or  glass in the tank but at
> this time there does not seem to be a serious algae
> problem, just a light series of types which have
> changed almost weekly.  Have been trimming the
> plants as necessary, and removing algae from the
> glass before water changes.
> 
> I'd appreciate help on the fertilization scheme and
> any other advice as well.
> 
> Bill Carpenter
> 
> 
> 
> 
> 
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> Aquatic-Plants at actwin_com
>
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