18 months antifouling test results

2 months ago
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Serb1980
Serb1980
396 posts
396 posts
2 Apr 2026 12:38pm
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
garymalmgren
1381 posts
1381 posts
2 Apr 2026 4:51pm
Thanks for your effort Serb!
Serb1980
Serb1980
396 posts
396 posts
2 Apr 2026 4:57pm
garymalmgren said..
Thanks for your effort Serb!


We made it!
Serb1980
Serb1980
396 posts
396 posts
2 Apr 2026 4:59pm
Enough of 250 bucks every month for divers . no more !
Serb1980
Serb1980
396 posts
396 posts
2 Apr 2026 5:03pm
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
Serb1980
396 posts
396 posts
2 Apr 2026 5:06pm











GusTee
GusTee
NSW
266 posts
NSW, 266 posts
3 Apr 2026 6:26pm
Thank you for your efforts in making these posts.
Serb1980
Serb1980
396 posts
396 posts
28 Apr 2026 7:01am
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
Woylie
WA
43 posts
WA, 43 posts
29 Apr 2026 6:08am
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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