PLEASE PASS ON ANY ADVICE, COMMENTS OR ASSISTANCE!
We have a concrete pond alongside the pathway to our house. There is a 2 m, kidney-shaped pond that overflows into a larger, 7 m figure-eight shaped pond. The top "circle" of the figure-eight is very elongated and shallower than the second, irregular-shaped "circle" so using a pond liner would be very difficult. We don't know how it was built (we are not the original owners of the property), but it is certainly very attractive.
Because of the length and shape and the excessively dry summer, a second crack has appeared in the larger section. We fixed a previous one with silicone and that seems to be okay.
However, after cleaning the whole thing out and waterblasting the surface we are confused as to the best product for painting or recoating it. Resene suggested we telephone Jansens in Auckland who said to use Pondflex by Holdfast. However, they no longer have stock! I've emailed Holdfast, but in the meantime any input would be GREATLY APPRECIATED.
Altex Coatings also have a product called Shield 2000 - I'm also waiting for an email from them.
I'm no spring chicken, so having to paint the inside needs to be relatively easy. Then again, if not too expensive, we could always use a contractor. Where does one stop???
Suppose there are other options - eg plaster, another coat of concrete, swimming pool paint (providing it is non-toxic), etc, etc. In the meantime, the fish and plants are happily ensconced in some plastic troughs that are to be re-located into the new paddocks.