Dosing Dry Ferts - The Planted Tank Forum
 
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post #1 of 15 (permalink) Old 12-15-2005, 09:52 PM Thread Starter
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Dosing Dry Ferts

When you are following your daily schedule, do you dose your ferts; KNO3, KH2PO4, K2SO4, etc ... after you mix it with water, or do you directly dose it dry into your tank?
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post #2 of 15 (permalink) Old 12-15-2005, 10:00 PM
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I do whichever is more convenient for me. Liquid solutions for N and P, since I use so little it would be hard to measure dry. For K/Fe/trace, I make a big dry mix, and a small bottle of liquid from the mix. I use the liquid for periodic doses, and the dry mix for larger doses after a water change. I put the dry mix in my box filter to give it a chance to dissolve a bit before it enters the tank.
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post #3 of 15 (permalink) Old 12-15-2005, 11:09 PM Thread Starter
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Well, when I usually dose my micronutrients I use 1/4 teaspoon of KNO3 and mix it with the tank water before dosing it into the tank, I was thinking instead of mixing and pouring, can I just dump 1/4 teapsoon of KNO3 into the tank?
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post #4 of 15 (permalink) Old 12-15-2005, 11:22 PM
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I would do this only if there are no fish in your tank. Easy enough to put the powder into some container, stir it a few times, and then put it into the tank.

(If you get tired of it... use AUTO DOSING )


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post #5 of 15 (permalink) Old 12-16-2005, 12:10 AM Thread Starter
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I wouldn't want to do something if it wasn't necessary, there are no fish the the aquarium.

I like the idea of the auto doser, but i've got a lot of things going on right now and don't have the time to make my own.
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post #6 of 15 (permalink) Old 12-16-2005, 12:57 PM
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Hi John,
I mix my N and K together in a container of warm water, this helps them dissolve. Then, in it goes! I'm going to make a solution of P for dosing soon.

As far as fish in the tank, I've heard from many folks that they dose dry ferts fom Greg, and the fish even try to eat it with no ill effects! I've tried this with no problems from my fish.
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post #7 of 15 (permalink) Old 12-16-2005, 02:44 PM
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I just dump it in. Does not seem to hurt the fish at all.

JR
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post #8 of 15 (permalink) Old 12-16-2005, 04:29 PM
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Quote:
Originally Posted by esarkipato
As far as fish in the tank, I've heard from many folks that they dose dry ferts fom Greg, and the fish even try to eat it with no ill effects! I've tried this with no problems from my fish.
Some fish just aren't as bright as one wishes. You can feed them probably a lot of things that aren't good for them. How do you know it doesn't mess them up internally? Just because they don't keel over immediately or start screaming and knocking on the glass doesn't mean there couldn't be ill effects.

Just use your good judgement and reason...


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post #9 of 15 (permalink) Old 12-16-2005, 05:13 PM
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Quote:
Originally Posted by Wasserpest
Just because they don't keel over immediately or start screaming and knocking on the glass doesn't mean there couldn't be ill effects.
I'll try to appreciate the sarcasm They just spit the food back out. We're talking about tetras and barbs here . . . .
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Just use your good judgement and reason...
I don't do it anymore, since I'd rather the stuff dissolve sooner than when it hits the substrate
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post #10 of 15 (permalink) Old 12-16-2005, 05:31 PM
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Sorry... it's just that each time I read "but my fish were fine" in my mind appears a "well how do you know?"


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post #11 of 15 (permalink) Old 12-16-2005, 07:08 PM
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On Sunday when I do my water changes, I mix my macro ferts for the week with water in left over sample jars from work (large baby food jars would work.) That way when I get up in the morning I can grab the jar and dump it in. They don't always fully dissolve, but it is so convenient to measure everything out once than to have to do it two or three times a week.


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post #12 of 15 (permalink) Old 12-16-2005, 08:38 PM
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I actually use a day-by-day pill container to hold each day's ferts. This is for Macros. Then, I just use every other day and I have enough ferts for two weeks.

Some times I dump 'em in, others I'll pre-dissolve them.

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post #13 of 15 (permalink) Old 12-19-2005, 12:39 PM
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That is a really good idea, Mike! I just might have to try that.
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post #14 of 15 (permalink) Old 12-19-2005, 02:39 PM
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If you are running a sump (bulkhead and all kinds of sump) you can dose like I did. Dump those fertilizers which dissolves perfectly in the sump. The circulation of water will slowly dissolves and diffuse it evenly to the tank. No worries of fish eating ferts and concern stressing inhabitants by a sudden spike of fertilizer concentration in the tank.


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post #15 of 15 (permalink) Old 12-19-2005, 08:10 PM
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I fold a piece of paper in half then unfold it, but leave the crease. Then measure out the amounts right into the middle. Finally, distract the fish with food on one side, and slide in the ferts on the other.
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