Enligt T. Barr spelar den beryktade stabiliteten inte så stor roll, så länge det *alltid* finns gott om all näring:
[quote=Anafranil]
We read about different dosing methods like PPS and EI.All these methods have one thing in common,stable values of po4 and no3 throughout weeks and months so we hypothsise that is this stability for a prolonged period that makes the explosion that destroyes algae growth.I am wondering though how much time this requires to happen and I would like to read some comments on that "stability" we were talking about and why plants react possitive to it.
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T. Barrs kommentar (inlägg 25):
[quote=plantbrain]
Anafranil-
Even the stability does not matter much.
As long as we do not bottom out the nutrients on the lower end. [min anm.]
The upper ranges before we have issues is extremely high.
See the NO3 dosing experiement I recently did, 120ppm of NO3, no algae, but about 1/2 the shrimp died after a 3 day exposure. No fish died.
PO4, I still have no clue what too high is.
It's way above 5ppm though.
Traces, I've gone extremely high here as well.
GH: Ca levels at 440ppm
Mg: I've gone to 50ppm
Low limits are much easier to find and observe.
As long as you maintain higher levels, non limiting levels on the light, CO2, NO3 etc, you can play at the lower limits with say, PO4.
The difference between say 10ppm and 30ppm of NO3 is not much.
As far as algae, well, some planted tanks do not have enough plants.
Again, do not limit the biomass of a tank. Add lots from the start.
You can phase some out as things settle in.
Also, use less light if you want less work, algae potential, less pruning, easier dosing routines etc.
More light is not better in virtually every case.
Once a tank is doing well, then you can do your test to see if the nutrients mess things up or not.
Regards,
Tom Barr
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