anyone see issues with this? - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 01-29-2014, 02:23 AM Thread Starter
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anyone see issues with this?

so, i'm kind of a lazy guy.
and i got sick of measuring out 5mil of this or 2mil and that, EVERY morning.
seeing as one of those say to "refrigerate after opening" i refrigerate them all.
i tryed to email, and phone "seachem" but they never got back to me.
so i do this now







all seems well freezing them as they only sit in the icebox for one week.
i've been doing this for about 6months now. but would like a more educated opinion.
and rather then doseing, say iron and potassium every three days and getting a spike.the a drop over time
i can mix the weekly dosage in the cubes and spread it out over the course of a week!
so now i just pop out two cubes in the morning and drop them in the tanks
i measured for. they melt very fast, infact they never really freeze solid

(those are 10mil cube trays)
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post #2 of 9 (permalink) Old 01-29-2014, 02:35 AM
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hahaha! I find this funny but it's cool. I might try it myself. As to freezing it, I don't think it'll break any compound in the process
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post #3 of 9 (permalink) Old 01-29-2014, 02:54 AM
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Cool idea


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post #4 of 9 (permalink) Old 01-29-2014, 03:31 AM
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When you freeze them, do crystals form? This could mess with the chemical structure of some things.
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post #5 of 9 (permalink) Old 01-29-2014, 03:34 AM
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Neat idea! Don't think I've seen it done before.

Only one potential issue I can think of. When freezing solutions, sometimes just the water seems to freeze, pushing the dissolved substance out and concentrating it. I forget what it was, but once this produced a block of seemingly pure water with a layer of "goo" on top.

If something like that occurs and the active ingredient sticks to the tray or your fingers and never makes it into the tank, it might change the dosage somewhat. If that occurs with Excel, concentrated glutaraldehyde is also a well-known sensitizer, repeated exposure can lead to contact allergies.

Not sure if any of this will really happen, just speculating.

On the positive side, perhaps one could make single cubes of solutions that can't normally be mixed, by freezing them a layer at a time.
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post #6 of 9 (permalink) Old 01-29-2014, 03:45 AM Thread Starter
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Quote:
Originally Posted by Positron View Post
When you freeze them, do crystals form? This could mess with the chemical structure of some things.
nope, thats the first thing i looked for in the last cubes (7th day)
they don't seem to freeze solid after a week in the box, still a little mushy
on the last day
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post #7 of 9 (permalink) Old 01-29-2014, 04:03 AM Thread Starter
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Quote:
Originally Posted by DarkCobra View Post
Neat idea! Don't think I've seen it done before.

Only one potential issue I can think of. When freezing solutions, sometimes just the water seems to freeze, pushing the dissolved substance out and concentrating it. I forget what it was, but once this produced a block of seemingly pure water with a layer of "goo" on top.

If something like that occurs and the active ingredient sticks to the tray or your fingers and never makes it into the tank, it might change the dosage somewhat. If that occurs with Excel, concentrated glutaraldehyde is also a well-known sensitizer, repeated exposure can lead to contact allergies.

Not sure if any of this will really happen, just speculating.

On the positive side, perhaps one could make single cubes of solutions that can't normally be mixed, by freezing them a layer at a time.

i use one cube exclusively for the the Excel, and one for the other mix, like iron, flourish,Potassium.spreading the 7 day dose out over the week, for those three, only fill one cube about 1/3

"When freezing solutions, sometimes just the water seems to freeze, pushing the dissolved substance out and concentrating it"

i gave that a thought, but than again it's still the same amount in the one cube for that day............right?


and i wash the trays out in hot, hot water before i refill on sunday night.

EDIT:
sorry i see what your saying about active ingredient sticking to the tray.
yes some "residue" is left in the cube after i pop them out but it seems like very little.
i only did iron tests after i started doing this, and the spikes stoped.
i was getting a barely detectable reading from my test kit on the third day after "weekly dose" from a good 0.3 on the first day.
to a solid 0.4 every day the next week after starting this

Last edited by tipsy mcstager; 01-29-2014 at 04:29 AM. Reason: missed the point
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post #8 of 9 (permalink) Old 01-29-2014, 06:43 PM
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I think your annoyance in measuring your liquids may be because you're using those hard to use syringes with the plunger so you can't suck it back up with one hand. I just use a 5mL medicine dropper with a big bulb on the end. Squeeze, suck, measure, squirt into tank. NilocG is even selling his ferts with the pumps now so you just squirt one or two squirts and you're done with it...

http://www.americanscreeningcorp.com...per-P4221.aspx

I'll admit that if you have 5 bottles of nutrients, it gets annoying .. but no more annoying than have to spend every weekend measuring them out in advance.
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post #9 of 9 (permalink) Old 01-30-2014, 05:01 AM
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I wouldn't enjoy using a syringe, that's for sure. Or even a dropper.

I have a little plastic 15mL vial, marked at each mL. Put the liquid fert in a bottle with a squirt top, squirt in liquid up to the required mark, and dump it into the tank. Super easy. No idea where the vial originally came from, mine was included with a used tank.
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