Flourish comprehensive

[Goalkeeper]

Hi anyone using above in tanks containing shrimps like CRS? Contents show it has 0.0001% copper and wonder if this is shrimp safe? If not what's the alternative as my tank is quite heavily planted and I have both fishes and CRS/fire red in it? Thanks for your help.

[Urban Aquaria]

The tiny percentage of copper in aquarium fertilizers is okay (it part of the trace minerals in water that benefits plants and fishes and even shrimps). Its only if you massively overdose the fertilizers until it greatly increases the copper concentration in the water, then it will become an issue.

With a high plant density, the plants will usually use up those traces of copper before it builds up to a lethal level for invertebrates anyways.

[Goalkeeper]

Thanks bro UA. In that case will use per recommended dosage on label.