tcbiii@NOSPAMearthlink.net
12-02-2003, 08:10 PM
(nikolay_kraltchev) wrote in message >...
> Has anyone had a problem maintaining the amount of Fe?
> I fertilize up to about 0.2 ppm Fe one day and the next morning I get
> 0 (inreadable).
Dont' worry about a measurement of Fe.
There's long discussions already about Fe test and what's being
measured.
With flourite and this lighting level if you add 15mls of traces(eg
Flourish or TMG) 2-3x aweek, that's _the max_ amount of of possible
iron needs for the tank at most any light level even up at 5+w/gal.
It's is unlikely that you need anymore than this in virtually any
case.
So, you might consider reevaluating the CO2 and NPK's if there's less
than good growth occuring. Water change(50%), check the CO2(pH and
KH), add nutrients back, repeat weekly.
Add nutrient dose mid week in between water changes, keep CO2 in the
20-30ppm range. Try 25 gallon of water changed a week. Doesn't take
that much longer.
I think you'll see a difference in the plant's health.
Overdosing traces never seem to stunt any plants as long as the
PO4/K/NO3 etc are kept in good shape as well.
I've added 30mls to a 55 3 x a week and never noted any issue either
way. I essentially was just wasting the traces.
Regards,
Tom Barr
> The tank:
> - 55 gal. standard tank
> - 2 watts / gal., 2 x 55 watts AHSupply CFs, Miro reflectors
> - Dense planting, about 10 species of plants
> - 100% Fluorite
> - N03, P04, K, KH, pH - according to Tom Barr's recomendations
> - Traces - I have overdosed on these the last 3 weeks (may stun the
> plant growth)
> - Water changes - 10 gals per week.
>
> --Nikolay
> Has anyone had a problem maintaining the amount of Fe?
> I fertilize up to about 0.2 ppm Fe one day and the next morning I get
> 0 (inreadable).
Dont' worry about a measurement of Fe.
There's long discussions already about Fe test and what's being
measured.
With flourite and this lighting level if you add 15mls of traces(eg
Flourish or TMG) 2-3x aweek, that's _the max_ amount of of possible
iron needs for the tank at most any light level even up at 5+w/gal.
It's is unlikely that you need anymore than this in virtually any
case.
So, you might consider reevaluating the CO2 and NPK's if there's less
than good growth occuring. Water change(50%), check the CO2(pH and
KH), add nutrients back, repeat weekly.
Add nutrient dose mid week in between water changes, keep CO2 in the
20-30ppm range. Try 25 gallon of water changed a week. Doesn't take
that much longer.
I think you'll see a difference in the plant's health.
Overdosing traces never seem to stunt any plants as long as the
PO4/K/NO3 etc are kept in good shape as well.
I've added 30mls to a 55 3 x a week and never noted any issue either
way. I essentially was just wasting the traces.
Regards,
Tom Barr
> The tank:
> - 55 gal. standard tank
> - 2 watts / gal., 2 x 55 watts AHSupply CFs, Miro reflectors
> - Dense planting, about 10 species of plants
> - 100% Fluorite
> - N03, P04, K, KH, pH - according to Tom Barr's recomendations
> - Traces - I have overdosed on these the last 3 weeks (may stun the
> plant growth)
> - Water changes - 10 gals per week.
>
> --Nikolay