Dosing with Aquavitro - The Planted Tank Forum
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post #1 of 3 (permalink) Old 07-13-2018, 11:36 AM Thread Starter
Algae Grower
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Dosing with Aquavitro


Apologies for such a basic question. Iím using Aquavitro Synthesis and trying to calculate an appropriate dose on Rotala Butterfly and it returns values for N and NO3.

If chasing a specific NO3 number i.e. 30 ppm do I:
A. Solve for NO3 and ignore the N component
B. Halve the NO3 target and accept the N value.

It makes a big difference to the amount of ferts used.

I understand that N converts to NO3 at 4.43. In the 30ppm example it would be
15 ppm NO3 and 3.41 ppm N (according to Rotala Butterfly) which equates to roughly 15ppm NO3.

Similar issues occur in
activate for phosphorus and phosphate; and in
seachems potassium between potassium and potassium oxide.

Any advice is much appreciated.

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post #2 of 3 (permalink) Old 07-13-2018, 12:49 PM
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Here's a quote from Seachems website: "Use 5 mL per 680 L (180 US gallons) twice a week (or as needed). This dose increases total nitrogen by 0.24 mg/L. This is the same amount of nitrogen that would be present if all nitrogen were present in the nitrate form at 1 mg/L. "

So 5ml/180g increases N by what would be 1 ppm expressed as NO3. It might be easier to calculate based on that.

Last edited by Jeff5614; 07-13-2018 at 01:06 PM. Reason: brain fart
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post #3 of 3 (permalink) Old 07-13-2018, 02:49 PM Thread Starter
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Thank you. Pays to read labels Iíve been using considerably more than I probably need to. No wonder the frogbit quadruples in size each week.

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