Wierd Growth On Silicone Tubing And Sealant In Recently Cycled Tank

I have just finished cycling a new tank using the fishless cycling method. Ammonia reading zero. Nitrite 0. I have still not introduced fish, and have been feeding the tank with a little (about 1ppm) ammonia (every 2nd day) to keep the biological filter working.

This morning I noticed some wierd white/brown dots all over the silicone in the tank - both edge seals and air tubing. See attached 2 photos (one of the air intake tube, one of the side edge sealant). The bacteria/fungus/mold did come off a test area when I tried using a cotton bud, but that left white flakes floating in the water afterwards.

Any ideas as to what this is? And what to do?

Photos available here:
http/www.flickr.com/photos/50726006@N08/4650116035/
http/www.flickr.com/photos/50726006@N08/4650115975/

crazyhorse said:

I have just finished cycling a new tank using the fishless cycling method. Ammonia reading zero. Nitrite 0. I have still not introduced fish, and have been feeding the tank with a little (about 1ppm) ammonia (every 2nd day) to keep the biological filter working.

This morning I noticed some wierd white/brown dots all over the silicone in the tank - both edge seals and air tubing. See attached 2 photos (one of the air intake tube, one of the side edge sealant). The bacteria/fungus/mold did come off a test area when I tried using a cotton bud, but that left white flakes floating in the water afterwards.

Any ideas as to what this is? And what to do?

Click to expand...

the links dont work so we cant see the photos


[#10171] You do not have permission to view this attachment.

this what i keep getting

sounds like diatoms. very common in newly cycled tanks and caused by the ammonia, just wipe it off and all being well it will go within a few weeks

Photos Uploaded:
http/www.flickr.com/photos/50726006@N08/4650115895/
http/www.flickr.com/photos/50726006@N08/4650116035/

Thanks

crazyhorse said:

Photos Uploaded:
http/www.flickr.com/photos/50726006@N08/4650115895/
http/www.flickr.com/photos/50726006@N08/4650116035/

Thanks

Click to expand...

i have seen this be fore in new tanks
its nothing to worry about it only
brought about by by the releasing agent
on the pipe its harmless if you just wash it off
in some warm water and it should be OK as for the
tank use some filter wool just rub it off and it will be OK

I'm not sure what that coating is that you have.