Many of the forum members living in Gauteng knows the product Hydro Seal well. They had a stall at the Johannesburg koi show and I only heard positive remarks about the product from everybody who used it on koi ponds and various other applications.

In view thereof, I went ahead and tested the product myself as I was never 100% confident with the other sealants like Coprox, Sika sealers, various Butimen sealers, Matcrete, Durapond, Cemflex, Cosmodek, Waterblok, Everbond etc.

I am very happy with the product and decided to do all my new selling ponds with Hydro Seal. (the decor range) and seal all the fittings with Hydro Stop from the same supplier.

We also became the sole distributor in Cape Town and I do have stock.

For more information, please consult the following brochure or send me an E-mail.

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Nothing beats waterblok!

I disagree.

Cliff wrote:

Nothing beats waterblok!

glass fibre

Hi Paul,

I have only heard positive comments on these products, but must admit, I know very little about the detail.
Please give us more information on drying time when applied to a dry or wet surface, how long should it "cure" before filling ponds. If it is cement based, what is the short term influence on pH. Also if you have the information available, what is the life expectancy of the product once aplied and the preparation required for the surface of an existing pond. Have you determined the price yet?

ek sal ok daarvan hou om al daai genoemde punte deer Pieter se antwoorde te kry asb.Ek gaan so produk binnekort nodig kry

Hi Frans

Ek het jou gese ek het ook n agentskap vir Hydroseal toe wil jy niks daarvan weet nie, wat nou.

Stem egter met Wayne saam Nothing beats fibreglass. Waterblok kom af ek ken die produk goed (hulle is net hier naby my) en jy moet dit gereeld oor doen, wat maak jy dan met jou vis.

Hi Pieter

Because it is a cement product like Coprox, you will have a high PH initially. However, if you rinse/wash the walls with pool acid, before you fill the pond, the PH stabilise quite soon.

You can fill the pond a day after your second coat, but you can only put the fish in once your PH has stabalised and are at an acceptable level. That should only be a few days if you rinsed and washed with pool acid.

Because it actually becomes part of the structure as it absorbes the sealer, it should last a very long time and will not peal like other sealers. Ideally you should apply Hydro Seal shortly after you plaster, while it is still moist.

You can also seal the walls with Hydro seal before you plaster(on the raw bricks/blocks/concrete) and then seal again after you plaster for better results.

I am selling at R 850.00/25 kg powder.

Herewith more specifications on how to apply:

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We are also selling the Hydro Stop from the same supplier, which you use on all your pipe inlets/outlets, bottom drain, skimmer etc. and it is excellent to fix cracks @ R79.00/1kg

Hi, this is why I was saying that waterblok is the best (tongue in cheak)

Like Paul said above it absorbs into the plaster. I did my sealer 3 days after plastering, when the plaster was still moist. How people can say that it peels off is beyond me, it actually looks like it is black cement that I have in my pond becuase it has absorbed into the cement so much.

I was also just saying waterblok is the best (my opinion, which actually does not count as I have not tried with multiple product....tongue in cheak again) because I am comparing product to price to finish.....this I referred to waterblok but actually refer to bitumen sealers in general.....you get alot better....like fibreglass......but at about 100/1 price difference.

People who say that these product are sh!t are only saying so from experience and probably due to the fact that they were putting this product onto a surface which was not properly prepared or moist enough for it to absorb into. Moist cement forms a capillary action which draws into it....bitumen sealers cannot go onto dry surfaces as they do not bond and will peel off.

If the sealers are peeling it's just a reflection on the bad preperation by the individual prior to application.

Hi Cliff

This is my original 10 000l koi pond build, on page 6 i used ABE super lykold to waterproof the pond. So i have done it before and had to redo it just a few months later again. I describe the method used on that site. I used the matting that goes with the bitumen product, a few months later the matting started to make bubbles and started to come loose from the sides. Now if i say bubbles i mean bubbles the size of 40cm round and about 10cm high. The amount of work to put on bitumen and fibreglass is about the same. The cost is something else.

I have done bitumen on my larger pond aswell but due to high ground water was forced to use fibreglass. I got a quote to have my big pond fibreglassed and the quote came in at R 21 000, so i decided to do it myself and it cost me R 8000.

Wane

Hi Wayne, I'm really only referring to straight bitumen onto plaster......where it can for a capillary action with the cement....I reckon matting cannot form this bond with the plaster so that possibility of bubbling probably always a possibility.

Just the cost and if done right bitumen sealers are pretty difficult to ignore. My 30k litre pond waterblok cost me R950 in total and so far i am pretty happy with it......but if I was to experience a crack or something like that then fibreglass would have to be first choice

Hi Cliff,

Hydro Seal is a cement base and it can be absorbed by concrete, whereas bitumen is not and it has to rely on adhesion only. Waterblock is also meant to stick to old surfaces not just new concrete and I had a large area come loose after a short while caught it all in my filter basket every day, was very disappointed in the product. In my engineering days we did a lot of coating work and I am sure there was nothing wrong with my preparation.
I have not yet personally tested Hydroseal but have heard a lot of good about it, specially like the fact that one has a choice of colors.
A friend of mine has just done his new selling ponds with Hydroseal and I will watch it closely.


Paul,

I think your price is good for your the area I charge R830.00 up here.

Well, im glad there is another choice of waterproofing now on the market, i still belive fibreglass is the final answer to all waterproofing problems but if one does not need it then why spend the money.

Paul, thank you for giving the guys in the cape another waterproofing option. In my opinion anything is better than bitumen. Here in the cape its getting more and more difficult to get our hands on koi related products and its great to see new once coming to our area.

Seeing as Neville brought the colours up, why do we all make our koi ponds black? Is there a reason why we make it black? I noticed that the japanese make their show ponds green.

Wayne

I think the main reason for the different colors is for people who use it on buildings. I think the charcoal is the best color for a koi pond as any other color would show up any dirt in the pond and it will not look good.

I agree that koi appears much better in a black or charcoal background. I even believe show vats could be black. At the recent koi show, I had two selling ponds, one JOJO tank with a black backgound and one traditional show vat with blue background. Most of the people said the fish in the JOJO tank appeared better.

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(Mr Sandfilter De Villiers, and Jan Pretorius on the right)

One advantage of the different colours in the Hydro seal range, is that you can use the various colours on your surrounding water features/waterfalls. A combination of Kalahari and San Le Mere is popular to do natural rock art.

I am currently painting my house with Hydro Seal (Kalahari colour). I used building blocks, and therefore needed a proper water proofing sealer as there are no cavity walls and the Western Cape can be quite wet.

It actually works out cheaper, as I do not have to use any plaster primer and an undercoat before I paint. Only one (or two) coats of Hydro Seal directly on the plaster. Will post pictures soon.

Hell Paul, ek is beindruk, dit lyk of al my moans en raad het gehelp met die cavity storie, mooi man.

Allways ask if you are not sure, we will help you.