Rain water soaked rocks

[Gary S]

So ive been bleaching rocks outside after some bad algae, and its rained a good few times while they were outside. Is there anything to be concerned about infiltrate wise (Copper, nitrates ect)?

 

[Justfebreezeit]

I'd definitely cure them before introduction to a tank.

 

[NY_Caveman]

So it rained into the bucket with the bleach solution? Rain water is essentially pure water. I would only be concerned if I was in a heavily polluted big city. If it overflowed you might want to dilute the area around the buckets (if you want anything to grow there again).

 

[Gareth elliott]

This is unlikely to cause any issues.

The largest quantities of compounds will be chloride, if near the ocean. Nitrate and depending on location some amount of acids and bases.

Rain in the midwest has the highest nitrate quantities, probably fertilizer related somehow.

Phosphate is found in very small amounts as well in rain. But not enough to cause significant binding to the rocks.