Could hydroponic nutrients be used in the aquarium safely?

[Subsea]

that's pretty much what I assumed and why I think that part would be more workable than the others. Not sure about the epsom salt yet although I have read of people using it in reef tanks. That big 3rd part of the mix though has so much stuff in it that I'm not sure it would be wise to try. I might try it for just phtyo, but I worry about the amount of phosphorous in the mix and what effect that would have.

Because I never grew SPS I have never fretted on too much phosphate. For a nitrogen source, I dose NH4. with elevated nitrogen, your tank inhabitants, hopefully desirables, will consume available phosphate

 

[Prince23]

It’s simple salts. I thought the same!!! But I had a 40 gal I experimented on and it made my 130 gal look like ****. So I made the change!! And realized!! I dislike when people give the wrong advice without any knowledge or just the internet!! Wanna see this is a 130 gal 0 filters just water movement or good flow. And advanced nutrients. It’s not just for plants!!!

 

[N.Sreefer]

It’s simple salts. I thought the same!!! But I had a 40 gal I experimented on and it made my 130 gal look like ****. So I made the change!! And realized!! I dislike when people give the wrong advice without any knowledge or just the internet!! Wanna see this is a 130 gal 0 filters just water movement or good flow. And advanced nutrients. It’s not just for plants!!!

Advanced nutrients organic fertilizer for marijuana? There's alot more in there than simple salts liquid fish hydrolysate for example.

 

[Cory]

While you could use it just remember that its meant for plants. Ammonia would be acceptable to plants but to fish would kill them. But as a trace element, like a drop a day, it might be okay.

 

[Subsea]

with respect to NH4 dosing, I have used 1 ml per 10G for more than 20 yrs. I drip it in a high flow area away from fish.

 

[Randy Holmes-Farley Verified Community Expert]

FWIW, I would never assume that any product meant for a different industry will be adequately pure for a reef aquarium without either knowledge of the purity (such as a purity grade) or an actual analysis, or lot of folks successfully using the identical product who have the same marine organisms as you. .

In this case, the needs for hydroponics are very different than marine organisms.

 

[Randy Holmes-Farley Verified Community Expert]

Is there any resource that gives the approximate level of various things found in natural seawater from various locations? It would make it easier to figure out what could be used and what can't.

Of course. Sea water concentrations are well known. I have articles showing it, as do lots and lots of online resources.

This product does not come close to matching seawater, if that's the goal.

WAY, WAY too much copper.

 

[kdx7214]

Of course. Sea water concentrations are well known. I have articles showing it, as do lots and lots of online resources.

This product does not come close to matching seawater, if that's the goal.

WAY, WAY too much copper.

Yeah, I assumed that would be the case, but this stuff is three different parts with each bag listed above. I assumed the copper and/or phosphorous content would be bad. I was more wondering if the other two parts (epsom salt and calcium nitrate) would work as food for phytoplankton.

 

[Randy Holmes-Farley Verified Community Expert]

Yeah, I assumed that would be the case, but this stuff is three different parts with each bag listed above. I assumed the copper and/or phosphorous content would be bad. I was more wondering if the other two parts (epsom salt and calcium nitrate) would work as food for phytoplankton.

Calcium nitrate or sodium nitrate are fine N supplements, if adequately pure.

Epsom salt is not useful for phyto in seawater. phyto does not benefit from increased magnesium or sulfate in seawater, since they are already so high. Their internal concentrations of magnesium and sulfate (like sodium and chloride) are much lower than in seawater itself, and they expend energy to pump them out, not take them up.