Preservative for fertilizer solution? - The Planted Tank Forum
 
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post #1 of 3 (permalink) Old 03-20-2010, 11:31 PM Thread Starter
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Preservative for fertilizer solution?

I'm going to rig up an autodoser. Right now I refrigerate my liquid solutions I mixed up from dry ferts to try to prevent fungus growths that I've heard others are having. Since the autodose solution will not be refrigerated, and I will plan on just topping it off, I'd like to add a preservative, and was wondering if there was any consensus.

I've heard bleach and hydrochloric acid suggested. Was there any consensus on what to add? I'm concerned over the preservatives interacting with the fertilizer, or the possible difficulties in obtaining hydrochloric acid...
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post #2 of 3 (permalink) Old 03-21-2010, 12:39 AM
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acid? bleach?

10ml of Excel to 500ml of dosing solution is fine. lasts longer then a month

KNO3 doesnt need it

My Potassium doesnt need it either...

My Flourish DOES..


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post #3 of 3 (permalink) Old 03-21-2010, 01:59 AM
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Bleach?

Quote:
Originally Posted by plantbrain View Post
Add 1 ml of 9 molar HCL to CMS to prevent fungi, some add Absorbic acid, citric acid will work as well(add about 5mls or these).

Muritic acid(sold in pool supply as acid shock), I think is about 20-25% HCL, so 1 ml of that is close and should do the trick, note, you do not need much and it is cheap.

Regards,
Tom Barr
Hope this helps.

Anthony


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