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Re: PMDD Dosing Schedule
- To: Aquatic-Plants at actwin_com
- Subject: Re: PMDD Dosing Schedule
- From: David Whittaker <dwhitt at sympatico_ca>
- Date: Sat, 07 Jun 2003 15:17:00 -0400
- References: <200306071131.h57BVmB6009485@otter.actwin.com>
Kirk asked about the PMDD dosing schedule.
> I just started using PMDD, and am a little confused as to the dosage that
> I should start with. I bought the ingredients from Homegrown Hydroponics,
> and used their mixing recipe for the amount of each dry solution to
> add. It is a little different from what I have seen on the Krib, but, it
> seems that it is focused on making smaller quantities than that on the
> Krib. Anyway, my question is this: the article on The Krib says to dose
> 1/12 mL (one twelfth) of PMDD per 10 gallons of water. Homegrown's site
> says to dose 3 mL per 100 L (about 25 gallons I would guess) of water in
> your tank. This is a BIG difference. Which should I do? I know that you
> should determine the dose that is right for you over time by
> experimentation and monitoring levels of NO3 and Fe, but I don't want to
> start off OVERDOSING the tank and causing algae problems.
3 ml per 100 liters would be way too much. 1 to 5 drops per day per 100
liters would be close. It depends upon the light intensity etc.
etc...You'll have to test for nitrates.