[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [APD] Flourish iron & KH drop
That's been my experience also.
I recently bought a Hagen test kit (
Tap water reads zero (i.e the test sample stays clear). My tank water
read zero initially, & after a few days of adding Flourish iron, it
increased to 0.1mg/l (the lowest reading possible - i.e the test sample
has a noticeable bluey tinge).
I agree with you. I bought it so that I could see if adding the iron was
doing something at least (I don't plan to rely on the measurement!).
Just FYI - I tested the "5ml in 2l" sample. The bluey tinge was off the
scale! So the test definitely reacts to different levels of Iron.
Like all of the colour-chart based tests, it's quite hard to distinguish
between the colour above & the colour below. Depending on the light & the
angle of viewing, the resulting error can be quite high.
>What's your method of testing for iron. For the minscule levels one needs
for aquatic gardening most of those of-the-shelf tests are pretty much
>useless, imo. One way to make use of them, if they register any iron at
all, that's usually enough.
>* * * * * * * * * * *
>November too cold? Too hot? How would you like to spend part of it in San
Francisco? Cable cars, Lombard St., Chinatown -- and a simply huge aquatic
>The 2006 Aquatic Gardeners Association Convention will be November 10-12
at the Sheraton Gateway Hotel -- San Francisco International Airport.
>Details will be posted soon at http://www.aquatic-gardeners.org/
>>----- Original Message ----
>>From: Kevin_Buckley at uk.neceur.com
>>To: aquatic-plants at actwin_com
>>Sent: Friday, March 24, 2006 5:57:33 AM
>>Subject: Re: [APD] Flourish iron & KH drop
>>I guess a 500ml dose each time would be quite interesting to watch!
>>My tank initially measured 0mg/l Fe so I made an initial dose of 2 x
>>"capfuls" (~4ml - 5ml).
>>After that, I was dosing a capful every other day & my Fe was hovering
>>I used the "5ml added to 2l" quantity so that the test was do'able & the
>>result likely to be measurable by a "hobby" KH test kit.
>>Trying to add 50 microlitres of Flourish iron to 2l would be pretty
>>impossible & I'm sure the result would be unmeasurable using a "two
>>per degree KH" test kit.
>>However, what I can tell you is that, within 2 minutes of adding 5ml of
>>Flourish iron to my 50g, the pH started to drop from it's controlled
>>of 7.30, down to 7.15 after about 15 minutes.
>>So it seems to me I don't need to look elsewhere for the culprit!
Aquatic-Plants mailing list
Aquatic-Plants at actwin_com