Fish and dry ferts - The Planted Tank Forum
 
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post #1 of 3 (permalink) Old 10-01-2012, 12:23 PM Thread Starter
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Fish and dry ferts

When I dose dry ferts (NPK or CSM+B), and they slowly drop into the tank, I notice that my fish take bites at them then spit them out. Once, I dissolved the frets in some water first then poured in the concentrated solution only to have my fish swimming around in the concentrated swirls looking for food.

Isn't either way toxic in those high doses to the fish? Is there a better way of doing it?
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post #2 of 3 (permalink) Old 10-01-2012, 12:59 PM
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No need to worry your fish will not be harmed by this one bit.
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post #3 of 3 (permalink) Old 10-01-2012, 01:50 PM
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I don't know if it can hurt them or not but question it.

I prefer dosing fertilizers in liquid form rather than the dry chemical. Fish can act darn stupidly and mouthing or eating Potassium Nitrate (KNO3), Mono Potassium Phosphate (KH2PO4), Potassium Sulfate (K2SO4) or Plantex CSM+B is a concern I have dry dosing. Probably thousands dose dry world wide without issue. I use to add it all dry but on accident dosed with the pumps off and the water calm. The chemical salts sank and landing on the plants in concentrate. Burned the plants killing growth to the base node. I've lost young fish that were seen grabbing the granules and spitting it back out. Quit dosing dry when I foolishly (in a hurry on my schedule) did it more than once. Who here is perfect? Pumps turned off to feed the fish I've later gone to bed forgetting to turn the filter back on. Nothing perfect about me.


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