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I do dose my tank with K with K2SO4 or every 2-3weeks KNO3 together with TMG
Hi guys, with frequent reading online, much knowledge was gained on fertilization. The problem now is the famous Tom Barr has propose adding N,P,K and traces to a fix volume of tank without testing..(This is interesting idea -- no hassle of testing huh?...but the risk of nutrients like N and P building up is definitely there as uptake of nutrients varies from tank to tank and even 50% water change per week might no solve it.)
Scenario one (Assume 20 gallon tank)
CO2 = 20-30ppm
Light = 3-4W/G
10ppm of nitrate added 2X per week
0.5ppm of PO4 added 2X per week
20ppm of potassium added once per week after water change
traces 5ml of TMG 2X per week
GH=3 (Dunno much abt the Ca and Mg ratio) --possible risk of particular nutrient deficiency here thus limiting N uptake?
Fe = From TMG..might be on the lean side?
If uptake of N is low...maybe 2ppm for entire week. 8ppm of nitrate left plus contribution of nitrate from fish..maybe 9-10ppm...water change 50%. Approximate 5ppm left..then add 10ppm back???? = 15ppm for the week..its gonna build up!
[]
Okay...now..is it possible to do with just TMG?
Plant Physiology by Taiz and Zeiger
I do dose my tank with K with K2SO4 or every 2-3weeks KNO3 together with TMG
To some, fertilization knowledge has come to a stage where they increasing wanted to be in fuller charge of what is in the water column. For these group of hobbyists, keeping plant alive or algae free are no longer the concern/in their mind; they wanted the plant to be presented in their optimum form/health. Such persue cannot be explained in words, one has to see the optimum kept plants and compare what they have to understand or even to beleive.
As such the comercial "comprehensive" ferts alone do not longer satisfy these group of hobbyists where some of the essential macros like NO3, Mg, PO4, Ca, (particularly PO4) are excluded or insufficient. These commercial ferts depend on fish wastes and/or base ferts to come to full circle for the plants. However, such sources are unpredictable/unreliable in their outputs. That is where the addition of macros come into picture. Of course, the proportions of them come by experiments.
Tom Barr's formulae I beleive, is a proven dose regime in quantity that the plants are known to be able to absorb in a given period of time, and in a balanced form that the plants would rake in at optimum rate. To make things simple for advanced or novice alike, a 50% water change every week is suggested to keep the risk of water out of balance at bay.
In following Tom's formulae, the concern of plants not taking in certain nutrients at the desired rate will not surface unless:
1) insufficient light (less than 0.5 watts/litre) and/or
2) nutrients not in balanced proportion and/or
3) temperatures not in the plants' thriving range and/or
4) lack of tank maintenance like washing of filter, change old lamps, etc.
5) too heavy fish load/over feedings lead to point 2).
Can one depends solely on commercial fert? Yes, with the right selection (those with the right nutrient coverage) and a bit of luck (that the fish wastes/base fert leak don't let them down).
And right CO2 level too, which Tom always advocate.----------------
On 3/16/2003 10:03:31 PM
To some, fertilization knowledge has come to a stage where they increasing wanted to be in fuller charge of what is in the water column. For these group of hobbyists, keeping plant alive or algae free are no longer the concern/in their mind; they wanted the plant to be presented in their optimum form/health. Such persue cannot be explained in words, one has to see the optimum kept plants and compare what they have to understand or even to beleive.
As such the comercial "comprehensive" ferts alone do not longer satisfy these group of hobbyists where some of the essential macros like NO3, Mg, PO4, Ca, (particularly PO4) are excluded or insufficient. These commercial ferts depend on fish wastes and/or base ferts to come to full circle for the plants. However, such sources are unpredictable/unreliable in their outputs. That is where the addition of macros come into picture. Of course, the proportions of them come by experiments.
Tom Barr's formulae I beleive, is a proven dose regime in quantity that the plants are known to be able to absorb in a given period of time, and in a balanced form that the plants would rake in at optimum rate. To make things simple for advanced or novice alike, a 50% water change every week is suggested to keep the risk of water out of balance at bay.
In following Tom's formulae, the concern of plants not taking in certain nutrients at the desired rate will not surface unless:
1) insufficient light (less than 0.5 watts/litre) and/or
2) nutrients not in balanced proportion and/or
3) temperatures not in the plants' thriving range and/or
4) lack of tank maintenance like washing of filter, change old lamps, etc.
5) too heavy fish load/over feedings lead to point 2).
Can one depends solely on commercial fert? Yes, with the right selection (those with the right nutrient coverage) and a bit of luck (that the fish wastes/base fert leak don't let them down).
----------------
No Gwee, it won't buildup. It will just equilibrate at a high level if you follow you own prescribe dosage and water change regularly.----------------
On 3/16/2003 1:47:26 PM
If uptake of N is low...maybe 2ppm for entire week. 8ppm of nitrate left plus contribution of nitrate from fish..maybe 9-10ppm...water change 50%. Approximate 5ppm left..then add 10ppm back???? = 15ppm for the week..its gonna build up!
[
Okay...now..is it possible to do with just TMG?
----------------
Geoffrey, can you please explain how it would not build up given uptake of N and other nutrients are minimum?
Plant Physiology by Taiz and Zeiger
Gwee,
I knew you will ask me this question. PM me with your email and I will send you something for you to play and you will understand what I mean.
See if this answers ur question :
Water Changes
ThEoDoRe
Email me at [email protected]
Plant Physiology by Taiz and Zeiger
Okay...maybe one more thing...anybody know if the GH in our tap water is enough for plants (GH=3 with AP test kit).
Plant Physiology by Taiz and Zeiger
Peter, according to your model:
Consumption by plant: 2ppm
Add NO3: 10ppm
Contribution by fish: 2ppm
Water change 50%
According to your model, the NO3 should not exceed 20ppm.
20 ppm, after 50% water change you will get 10ppm
10ppm + 10ppm (add NO3) + 2ppm (fish) - 2ppm (plants) = 20ppm
50% water change will reduce to 10ppm and the cycle repeats.
BC
My advice: try out and you will know for yourself. Everyone's tank/plants are different.----------------
On 3/17/2003 11:37:58 AM
Okay...maybe one more thing...anybody know if the GH in our tap water is enough for plants (GH=3 with AP test kit).
----------------
My experience: I did experience some Ca deficiency symptoms.
BC
Okay, BC thanks for the kind input...maybe I screw up on the calculation part...LOL []
Plant Physiology by Taiz and Zeiger
Gwee,
how is it? Theo2001's info from Krib is exactly the same as mine except that in Krib, it's mathematically shown while mine can show you graphically.
Graphical would be nice...send it over [
Plant Physiology by Taiz and Zeiger
Did you receive my attachment? Are you convince?
Haha...thanks geoffrey...much better without all those equations around.
Plant Physiology by Taiz and Zeiger
Resistance is futile, you will be administrated!
Geoff,
Share, dude, share!!! [
Vincent - AQ is for everyone, but not for 'u' and 'mi'.
Why use punctuation? See what a difference it makes:A woman, without her man, is nothing.
A woman: without her, man is nothing.
I like to but how? It's in Excel. Can I send you and then you make it available to all?
Resistance is futile, you will be administrated!
Can do... I'll host it on my webbie. Send it along.
Vincent - AQ is for everyone, but not for 'u' and 'mi'.
Why use punctuation? See what a difference it makes:A woman, without her man, is nothing.
A woman: without her, man is nothing.
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