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Discussion Starter #1 (Edited)
Hey, I'm using RO water and add "SHRIMP KING SHRIMP SALT GH+/KH+" to make it good for the fish.
Now 'm I wondering if I can use the old aquarium water with the minerals and use that for vegetables plants.
Couldn't find anything about it anywhere, would it be safe for human consumption?

I also already emailed Dennerle and they said this:

I’m not sure if I understand you question right.
You want to use the aquarium water, conditioned with SHRIMP KING SHRIMP SALT GH+/KH+ for vegetables for example?
If so, it is no problem!
All Dennerle Products are completely safe for aquatic animals which are much more sensitive than we humans are.
Aquarium water is perfectly suitable for all kinds of plants.

https://dennerle.com/en/products/nano-aquarium/nano-care/shrimpking/shrimp-king-shrimp-salt-ghkh
 

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Discussion Starter #2
I mean even Prime (water conditioner) says it is safe for fish but we do know it ain't, it is pure poison.
 

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Old aquarium water will be fine on plants outside. If they are potted you might get a mineral build up if you over do it but land plants use the same nutrients aquarium plants do. The stuff is so watered down it's a non issue.

Where I live my soil is very low in calcium and magnesium. I have to add it if I want to get any kind of crop.
 

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snails are your friend
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My gardens are regularly watered with my aquarium water, provided I haven't medicated. I thought Prime was sodium thiosulfate which isn't something you'd want to drink straight but is far from poison. In fact it's used for treating cyanide poisoning in humans and is on the WHO's list of safest and essential medicines. Interesting that you've read it's dangerous, would love a source to read further. Not arguing on the internet here, I'm genuinely curious.
 

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Discussion Starter #5 (Edited)
My gardens are regularly watered with my aquarium water, provided I haven't medicated. I thought Prime was sodium thiosulfate which isn't something you'd want to drink straight but is far from poison. In fact it's used for treating cyanide poisoning in humans and is on the WHO's list of safest and essential medicines. Interesting that you've read it's dangerous, would love a source to read further. Not arguing on the internet here, I'm genuinely curious.
Double to say, yes prime is claimed to be safe for fish, otherwise they wouldn't be (able) to sell it.
But the problem with prime and "every other" water conditioner is that it is known to cause problems in fish.
Thing is, fish don't live 100 years like we do, if we lucky, so most sicknesses won't show, only in fish which get older.

Old aquarium water will be fine on plants outside. If they are potted you might get a mineral build up if you over do it but land plants use the same nutrients aquarium plants do. The stuff is so watered down it's a non issue.

Where I live my soil is very low in calcium and magnesium. I have to add it if I want to get any kind of crop.
Was thinking of pot plants but those only live one year so don't think that would be a biggy.
But only heard good things so why not try it on me crops outside...

So these minerals are just natural? (no chemicals)
 

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Discussion Starter #6
Prime contains complexed hydrosulfite salts which removes chlorine, chloramine and ammonia. Prime also converts ammonia into a safe, non-toxic form (ammonium) that is readily removed by the tank’s nitrifying bacteria.
Prime may be used during tank cycling to alleviate ammonia/nitrite toxicity.

Hydrosulfite is another which don't do good with living things.
From their own website, and what was that stuff called, that they shoot into body's after dead to keep the body good for extended amounts of time? That is also in prime hence why I say any water conditioner are pure poison.
 

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snails are your friend
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From their own website, and what was that stuff called, that they shoot into body's after dead to keep the body good for extended amounts of time? That is also in prime hence why I say any water conditioner are pure poison.
Formaldehyde? At any rate, before calling something pure poison, you have to know the solution strength of the said toxin, LD50 rate at its pure form, and much more. Apples and especially their seeds contain cyanide, avocados contain persin; many, many of the things we eat have safe amounts of technically "toxic" chemicals. And if dosing by instruction, you're only putting two drops of Prime per gallon of water. That's one part Prime to 37,854 parts water. And in virtually any case of a water change, it was added to the aquarium at least a week ago. Besides extreme dilution, the chemical reactions it goes through when added to chlorinated water, and breakdown of said chemical over time have to be factored in. I'm not saying that Prime is safe, but I am saying that if it was pure poison that it would not likely be safe to use on the most sensitive aquatic creatures that can kept in a glass box.


So these minerals are just natural? (no chemicals)
Important to point out here that all matter is made up of chemicals, whether natural or made in a lab. Water is H20, etc. Amanita mushrooms are as natural as organic life comes but can kill a human being who ingests even a tiny mushroom. Some organic pesticides are classified as more dangerous than their conventional counterparts; the chemical structure, not where it came from, determines toxicity.
 

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Important to point out here that all matter is made up of chemicals, whether natural or made in a lab. Water is H20, etc. Amanita mushrooms are as natural as organic life comes but can kill a human being who ingests even a tiny mushroom. Some organic pesticides are classified as more dangerous than their conventional counterparts; the chemical structure, not where it came from, determines toxicity.

Many people unfortunately think Natural = Good and perfectly safe and Chemical = Bad. I have to remind people often that there are PLENTY of natural things that are really bad for you, and EVERYTHING is a chemical.
 

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I have gone through this thread and removed several posts that are off topic/uncivil. Please keep the conversation respectful to all members.

Warnings have been handed out, and infractions will come next.

Back on topic, Prime does not contain formaldehyde, as far as I know. The SDS makes no mention of it:

https://www.dropbox.com/sh/iu6wapsz...74YoOLmTa?dl=0&preview=Prime+SDS+20151222.pdf

It is a well known 'secret' that it contains sodium thiosulfate, to neutralize chlorine and chloramine. However, even this is not listed in the SDS, indicating it is in such low concentrations that it is not deemed hazardous in general use.

Compounds that are made naturally will be the same as those that are artificially made. Vitamin C (ascorbic acid) that comes from an orange is the same as a pill that is made in the lab. Antibiotics are another example of a chemical compound that used to be artificially made, but is now artificially made, simply due to economical constraints and also concerns on purity.
 
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