Should I dilute ferts for auto dosing? - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 08-13-2015, 02:05 PM Thread Starter
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Should I dilute ferts for auto dosing?

Hello,

I am setting up an auto dosing system and was wondering what the opinion was on diluting the ferts. My system is capable of 1 ml doing so I do not need to match the dose to the timer. Is it worth diluting it down to say dose 70ml instead of 7ml? Would this help keep the lines clean or am I just making more work for myself. This would be for Macros, Micros, and Excel.

Thanks,
Mike
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post #2 of 9 (permalink) Old 08-13-2015, 03:33 PM
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I would not dilute excel unless you need to, as excel looses shelf life if the pH isn't just right...


Assuming you are already mixing your macros and micros up from dry, the volume of dilution shouldn't really change the amount of work, should it? Well, aside from changing how many doses you can fit in a reservoir.

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post #3 of 9 (permalink) Old 08-13-2015, 05:22 PM Thread Starter
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My thought for diluting was that it would move everything through the lines faster. For example, if I am dosing 10ml of excel, the tubing might hold 10ml, so for an entire day the next dose of excel is sitting in the tubing, being exposed to UV (I think part of what breaks excel down). If I dose a more diluted concentration, only 10% of the dose was in the line and the rest was still under the tank in the dark. (Numbers for line capacity completely made up). I could be completely wrong.

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Mike
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post #4 of 9 (permalink) Old 08-13-2015, 06:15 PM
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As far as I know, excel (aka glutaraldehyde) is not degraded by UV light...

It is well known for degrading when not diluted properly..

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post #5 of 9 (permalink) Old 08-13-2015, 11:52 PM Thread Starter
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Thanks.

Makes my life easier, 10ml of Metracide, 10ml of Micros, and 10ml of Macros. For some reason I got it through my head the the stuff in the lines would break down/grown mold.
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post #6 of 9 (permalink) Old 08-14-2015, 12:01 AM
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Micros might mold in line or reservoir. Add a small amount of excel to prevent that.

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post #7 of 9 (permalink) Old 08-14-2015, 07:02 AM
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Quote:
Originally Posted by mattinmd View Post
As far as I know, excel (aka glutaraldehyde) is not degraded by UV light...

It is well known for degrading when not diluted properly..
Glutaraldehyde is slowly degraded by UV light and is often sold in amber bottles for this reason.

Anthony


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post #8 of 9 (permalink) Old 08-17-2015, 03:00 PM Thread Starter
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I bought some black air line tubing, hopefully that will help stabilize the metracide. I wish there was a way to test metracide to see if it is still active?
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post #9 of 9 (permalink) Old 08-17-2015, 05:52 PM
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There's metritest test strips... rather expensive however.

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