Plastidip vs Krylon Fusion (still exists?) vs Polygem 1319

I am looking to ensure that certain objects are (freshwater) aquarium safe; and through many hours of research I have come up with these three products that have been alluded to in these forums or elsewhere.
Anyone have experience with any of these sealants, or have any advice?

Performix Plastidip ~5$
Krylon fusion spray paint ~6$
Polygem 1319 ~28$ (2 part epoxy)

Plastidip: seems to be mostly used on the back of tanks for backgrounds, and seems to come off rather easily. Don't know if this would be a problem or not. Also seems to be some questions regarding its suitability in fish tanks. Positives are the price and application ease.

Kylon Fusion: Is this even made any more? Is this it? Again ease of use and cost is a positive, however there seems to be mixed opinions on if this is indeed fish tank safe.

Polygem: seems to be used in marine/zoological environments and might be the safer bet, but it is also much more expensive. (Also a greater quantity than one would need at 1.5 quarts) Also it is much more involved in comparison to the sprays.

West systems 105: Another 2 part epoxy that is rated for marine use, but the same negatives apply as the Polygem epoxy.

 

As far as inside the aquarium in possible contact with water:
I have used krylon fusion. Once cured, no problem.
Would not us plastidip.
No clue on the others.

 

Thank you so much for taking the time to respond. To clarify: this would be used to coat the entirety of a decoration, so definitely in contact with water.

Would not us plastidip.

Any specific reason you wouldn't use Plastidip for this application?

 

I’ve used plasty dip on the back and bottom of my tank, the outside of the tank anyway. Looks good and was easy to apply, but does come off very easily. The portion of my hang on back filter that you used to adjust/level it has noticeably marred the paint. Though this is a benefit I guess if you plan on removing the paint. That said I don’t know that I would use it inside the tank as I worry it would come off and do some sort of harm to the fish, also in my experience it leaves a lot of fine dust around. . .

 

That said I don’t know that I would use it inside the tank as I worry it would come off and do some sort of harm to the fish

Hmm, that was what I was afraid of. Maybe I will stick to the recommended Krylon Fusion.

I assume the link that I provided in the first post is the correct Krylon product?

 

I have used krylon fusion. Once cured, no problem.

leftswerve if I may ask one more question. Will the Krylon adhere to any material? The object I am looking to coat is made of a Hydrostone/Limestone mix. And is the link that I provided in the first post is the correct Krylon product?

Thanks for any information.

 

That looks like the correct product. The slicker the material, the less adhesion you get. Unlike plastidip, fusion is just like any other spray paint. It will be difficult to cover a porous surface.

 

Would these coatings work on plastic or vinyl? If I (for example) wanted to put an Aquaman figure in my tank, would the Krylon render it safe to keep in the tank?

 

I used PlastiDip on the outside back of my aquarium. I’m happy with the job it did.

I’m pretty sure I saw a YouTube video of a guy who used it to coat his input and output tubes in his aquarium. Not sure I’d try it.

 

Hi guys, I know it's an old thread but I had questions related to those products.

Could any of these products work to render an unsafe rock aquarium-safe ? Like, would it prevent it from affecting the pH ?

Would it stay on a rock, or even a piece of wood ?

And also, it said earlier that it needs to be cured. How long would the curation be ?

Thanks!