Ona Liquid/Gel

Just a quick question. Is Ona gel and Liquid safe to use directly in a grow tent? Or are they meant for the outside? Right now I have liquid and following the advice I saw in another thread, I made a plastic container and put a computer fan in the top of it with holes on the side of container. Filling the container with ona liquid and water, while using the crystals to soak some of the dirty water up. I have an incoming fresh air vent as well as a scrubber at the top of the tent. But want to add something else.

Will the plastic container with the ona be safe to use right inside the grow tent?

I heavily use ona and I personally would never put into my actual grow area. Ona blocks work great to spread around your home, ona gel with the dispenser works great to clear large areas outside of your room. The stuff is pretty potent and I would hate for my bud to come out smelling like the stuff.