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PeteAtkinson

Potato, spit and Pledge

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I know this has been discussed endlessly. I hadn't tried potato as a wetting agent until recently (thanks Alex Mustard) and it seemed to work well on a glass 9" dome. Today I tried potato on an 8.5" acrylic dome and it worked poorly; the wetting properties disappeared quickly.

I have used spit as a wetting agent in the past, and also Rainex and Lemon Pledge as beading agents.

For acrylic what are your favourite remedies for over/under droplets?

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Spit seems to work well for my 8.5" acrylic - however, it won't work where there are small scratches at all, water will accumulate there.

I'm not sure if spit pre--dive and post-dive has the same effect though, I'd guess post-dive is more :sick:

 

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I also have a 8-9" acrylic dome. I utilize over/under splits with it all the time. In the beginning, I did not have water droplet issues applying a little spit before dives. Now spit does not work. Like you, I found the potato did not work at all on acrylic. I know Rain-X is a no-no for acrylic and I would never use. As acrylic ages, guessing this causes the drops to gather on the small unseen crevices. I'm curious though if buffing with Novus 1 would help that (?)

Recently, I found a product that will not hurt acrylic and works fairly consistently and as long as you apply it before every dive:

Sea Gold Anti-Fog Gel for dive mask.

https://www.diversdirect.com/p/sea-gold-scuba-mask-defog?gclid=CjwKCAjwoNuGBhA8EiwAFxomA3t7gvbuqpZGFXOk7FstFegBmL0DSkIjyhR6T8kDvgW1ej4pFDf_hRoClgoQAvD_BwE

Give it a try and let me know if it works for you.

Other than that, retailers keep telling me you have go with glass. I love glass, but that is an expensive test for consistent split shots.

 

 

Sea&Sea MDX housing
Canon 5d MarkIV
Sigma 15mm fisheye

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I have used Rainex on cast acrylic domes before without any problems, but now I am using Pledge Lemon furniture polish as a beading agent and it works well. David Doubilet has recommended this for years!

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