Patching holes

[micknean]

I have a couple of concrete water tanks that i want to paint. The surface has a lot of small holes which i would like to fill and make smooth. Can anyone suggest what type of fill i should use? Here a couple of pics.
http://i52.photobucket.com/albums/g31/micknean/Home%20Reno/DSC01881.jpg
http://i52.photobucket.com/albums/g31/micknean/Home%20Reno/DSC01882.jpg

[stevoh741]

you could use that "render paint". I've never used it but imagine it would cover those easily.

[cherub65]

Any suitable exterior filler, head off to your local hardware. Grab premixed and trowel on

[Artiglass]

You can buy small bags of "patching cement" from the BIG GREEN SHED ( aka Bunnings )....cheap as chips and right for the job. :D

[perestroika]

Non-shrinking grout (Lanco, $16/bag from Bunnies), mixed with Lanco 751 or 753 will give you a heavy-duty result. It sticks forever. However it's a hole-by-hole job. And may not be for drinking water.