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18 months antifouling test results

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Created by Serb1980 2 months ago, 2 Apr 2026
Serb1980
396 posts
2 Apr 2026 12:38PM
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Dear family and friends quick check on results after approx 18 months . Final verdict will be in December this year.
So far vivid petite plus 20% of copper powder is the best vivid petite can get (the middle black sample vs original petite left sample)
The absolute winner is Altex 5 plus with 5% zinc (znpt) not zinc oxide, 10% copper sulphate and 10% paint any mould additive ( here in blue).



Modified Altex has no slime after 18 months sitting in the water. I am speechless .

garymalmgren
1391 posts
2 Apr 2026 4:51PM
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Thanks for your effort Serb!

Serb1980
396 posts
2 Apr 2026 4:57PM
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Select to expand quote
garymalmgren said..
Thanks for your effort Serb!


We made it!

Serb1980
396 posts
2 Apr 2026 4:59PM
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Enough of 250 bucks every month for divers . no more !

Serb1980
396 posts
2 Apr 2026 5:03PM
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My boat was Antifouled with the same formula 12/12/25.. not a single gram of slime. Boat next to mine went to Newcastle for antifouling in January and you can't see his watering it's covered in slime and barnacles..


Serb1980
396 posts
2 Apr 2026 5:06PM
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GusTee
NSW, 266 posts
3 Apr 2026 6:26PM
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Thank you for your efforts in making these posts.

Serb1980
396 posts
28 Apr 2026 7:01AM
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For those who can't get zinc or other additives needed for their Altex 5 Plus, go to the nearest pharmacy and ask for 500 g of antifungal powder used to treat athlete's foot. Make sure it targets both Gram-positive and Gram-negative bacteria. Slowly mix the powder into your paint along with the anti-mould additive. Gram-negative bacteria are more dominant in our bay; however, Gram-positive bacteria are also present due to the mud. The powder is inexpensive and can help keep the hull slime-free for some time. This is a cheap alternative to zinc pyrithione.

Fair winds my friends and family!

Woylie
WA, 43 posts
29 Apr 2026 6:08AM
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Serb1980 said..
go to the nearest pharmacy and ask for 500 g of antifungal powder used to treat athlete's foot. Make sure it targets both Gram-positive and Gram-negative bacteria.


Are you talking about miconazole?



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"18 months antifouling test results" started by Serb1980