Krylon Fusion For Plastic Spray Paint - The Planted Tank Forum
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post #1 of 16 (permalink) Old 12-24-2011, 01:45 AM Thread Starter
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Krylon Fusion For Plastic Spray Paint

I am going to use Flat Black Krylon Fusion For Plastic Spray Paint on a PVC perforated sheet that I will use inside a tank. How many coatings do you recommend, and how far apart should they be? How long should I wait before putting it in the water? Thanks.
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post #2 of 16 (permalink) Old 12-24-2011, 04:01 AM
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Personally, I would never use any spray paint on the inside of my tank. I would not trust any of those chemicals in my water. Krylon Fusion is not a marine grade paint, but people have used it and have had no ill effects other than algae eating away at the finish over the course of a year.

As many coats as it takes to cover the piece completely and have a solid color.
As long as the directions say to wait between coats.
Wait a day or two at least before putting it in your tank.
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post #3 of 16 (permalink) Old 12-24-2011, 02:18 PM
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Just like anything else, two good coats should do it. I put my spraybar and plumbing into my tank about 12 hours after painting. I had it in the house to dry though, as it's too cold out where I live.
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post #4 of 16 (permalink) Old 12-25-2011, 03:04 AM
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Ideally wait a week for the fusion part to take place.
Here is the clip from the Krylon folks:
Dry to Touch 15 minutes
Dry to Handle 1 hour
Fully chip resistant after 7 days
post #5 of 16 (permalink) Old 12-25-2011, 04:29 AM
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I have done several projects with spray painted PVC tubing, using Krylon Fusion, but I didnn't wait the 7 days for drying. All of them experienced flaking off of the paint in a year or so. I suspect if I had taken more care with cleaning the tubing first, with alcohol, and had waited a week before putting the painted tubes in the water, it would have worked fine. Clearly there is a reason for their recommendations.

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post #6 of 16 (permalink) Old 12-25-2011, 04:47 AM
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I've been using plastidip for my in tank plastic items (eheim fixtures, etc). It leaves a black rubberized coating that seems to hold up pretty well.

-Charlie


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post #7 of 16 (permalink) Old 12-25-2011, 09:02 AM
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If you brush on a coat of epoxy on top of paint it will never peel and definitely wont have any effect on your water chemistry!
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post #8 of 16 (permalink) Old 12-27-2011, 03:02 PM
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Just to give you a sense of the other end of the spectrum: I used this stuff to paint a piece of PVC that I needed to drop in my tank. Waited 30 minutes, and in it went. No problems...

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post #9 of 16 (permalink) Old 12-28-2011, 02:41 PM Thread Starter
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Many thanks for all your replies. I will wait the recommended 7 day period before putting it in the water as I want it to last more than a year.
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post #10 of 16 (permalink) Old 12-28-2011, 02:42 PM Thread Starter
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Originally Posted by ibmikmaq View Post
If you brush on a coat of epoxy on top of paint it will never peel and definitely wont have any effect on your water chemistry!
What type of epoxy, and where can I get it?
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post #11 of 16 (permalink) Old 12-28-2011, 11:02 PM
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I've two caveats on epoxy over mesh. One is cost. If you can wait the week, Krylon Fusion shouldn't peel,flake or chip. Two is clogging the mesh. Epoxys are thick. Even epoxy paint is thicker and that's made to be paint thin.
post #12 of 16 (permalink) Old 12-29-2011, 04:45 AM Thread Starter
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I've two caveats on epoxy over mesh. One is cost. If you can wait the week, Krylon Fusion shouldn't peel,flake or chip. Two is clogging the mesh. Epoxys are thick. Even epoxy paint is thicker and that's made to be paint thin.
Thanks. I will wait the 7 days.
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post #13 of 16 (permalink) Old 12-29-2011, 11:55 PM
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Quote:
Originally Posted by sns26 View Post
Just to give you a sense of the other end of the spectrum: I used this stuff to paint a piece of PVC that I needed to drop in my tank. Waited 30 minutes, and in it went. No problems...
I'm with you there. I've painted several pieces and let them dry for about the same and dropped them in with no issues. I have yet to see any flaking or chipping.

Now when I painted mine I roughed the pvc up with a red scotch brite pad then sprayed them. As with anything I paint it always works better when the surface has been scuffed a little to help the paint adhere.

Semper Fi
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post #14 of 16 (permalink) Old 12-30-2011, 10:33 AM Thread Starter
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I'm with you there. I've painted several pieces and let them dry for about the same and dropped them in with no issues. I have yet to see any flaking or chipping.

Now when I painted mine I roughed the pvc up with a red scotch brite pad then sprayed them. As with anything I paint it always works better when the surface has been scuffed a little to help the paint adhere.
How long have you had them in your tank?
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post #15 of 16 (permalink) Old 12-30-2011, 12:58 PM
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How long have you had them in your tank?
3 months, I have other pieces I have painted that are more than a year old in my buddy's tank.

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