Koi Pond – Dispelling Myths About Concrete

What do some liner promoters and salesmen say about expert pond installations employing concrete and rebar, in addition mortar to hold the rocks?

(1) “Just one issue with concrete and mortar design is that of cement alkali leaching out for some time right after design, poisoning the pond water with superior alkalinity. It also leaves unsightly white deposit develop-ups at the factors of exit and on the surface of rocks in the waterfall.” NOT Correct!

If the concrete you use to pour the shell is a 7-sack blend with 40% pea gravel and stealth fiber combine, the concrete is so dense that no leaching can even take place. Also, due to the fact of the density of the concrete, it is not only water-resistant, but stronger than normal 5-sack mix used to pour driveways, patios and sidewalks. Last but not least, if you coat the finished area with Thoro-seal, a person of many non poisonous concrete sealers, it can not leach.

(2) “When you use mortar combine to protected the rocks in a waterfall, the drinking water that soaks into the porous mortar joints, leaches out alkali and phosphorescence that poisons the pond. Accurate in the previous, but not anymore. Normal mortar is porous, making it possible for h2o to move by, dissolving and gathering the cement residue. This had been a major problem of mine for quite a few yrs. Immediately after the completion of a waterfall, I would have to run the waterfall for two or three weeks, shutting it off each 4 or 5 times, and acid-clean the white alkali residue off the rocks that had created up.

Then, when we were being completed, we would have to acid cleanse and rinse out the pond. Fifteen years back I found a magic formula formula that would render the mortar blend non porous and water-resistant. It also tends to make standard mortar mix 3 situations much better. It is made by including 1 45# bag of thinset (applied to apply ceramic tile to a shower wall) to two baggage of type S mortar combine. When it cures, it gets so dense, it is totally waterproof and will not leach any alkali right after it cures (3 to 4 times). In addition, this combine is so solid in its keeping potential that when it cures, a sledge hammer is required to clear away a rock. In most situations, the rock breaks up right before coming no cost from the magic formula formulation mortar.

It is not only waterproof, but it bonds quite nicely with all styles and textures of rocks. It will create a watertight barrier that arrives in helpful when building rock dams in the waterfall. The most important element of my exclusive system is that it makes it possible for for significantly extra creativity. You have the potential to raise the water stage previously mentioned the confines of the concrete shell without the need of water leaking as a result of the mortar joints, as in the case of normal form mortar blend. This distinctive mix is not for sale in the merchants, and never ever will be, mainly because I give the formula absent for absolutely free! This discovery has revolutionized the performance of mortar mix and its means to bond, water-proof, and stop alkali leaching.

A Remarkable Test

A 4,000 gallon swimming pool was converted into a concrete koi pond with two big waterfalls, held together with my new mortar mix, and an 8′ x 12′ island. The rocks encompassing the island, had been also held by the new method. When the challenge was done, all the surfaces have been supplied a brief, mild acid wash, and the pond was crammed and dechlorinator was added. The next day, $3,000 really worth of my possess personal koi fish were being transferred into the concrete koi pond. They all swam calmly all-around the island, inspecting each and every nook and cranny.

None of them expert any strain and they remained in their short-term quarters for three months with no incidents. If that remarkable demonstration was not adequate to transform the skeptics, very little will. So what is the bottom line? Pond liners simply cannot be certain not to leak, for a myriad of good reasons. Concrete and rebar ponds, if built thoroughly, will remain leak-cost-free for many years, if not generations. You be the choose. You’re the one particular investing your tough earned funds and time into it.