Thread: Sealant For Fish Pond

Can anyone help? I have a tiled fish pond which is now leaking and I have to top it up every day. There are overseas companies that supply clear pond sealant but I cannot find out if such sealants are available in Chiang Mai.

try the shops where aquariums are built

Originally Posted by mickey

try the shops where aquariums are built

Thanks very much, Mickey. That was going to be my next port of call :-)

Glass aquarium shops may not help.
If there is a koi farm, and surely there is, or an actual proper aquarium they will undoubtably know. You may also try the govt. hatchery as they probably have concrete rearing tanks.

Thank you very much - appreciate your thoughts. Will look into that.

Try painting a coat of clear resin and while it is still wet , put a layer of fiberglass mat, and then another coat of resin.

It is not that easy to do it in fibreglass, as if you do it wrong, you will kill the fish.

Originally Posted by storm1fishing

Try painting a coat of clear resin and while it is still wet , put a layer of fiberglass mat, and then another coat of resin.

That will work 110% All he has to do is drain the pond let the bottom and sides dry out and apply as you say , It cannot fail

Originally Posted by Ratchaburi

It is not that easy to do it in fibreglass, as if you do it wrong, you will kill the fish.

They sell fibre glass liners for fish ponds world wide , you just have to let it cure for a while , as an experiment just leave it a day or so filled with water once its set ,drain it and fill again and throw one fish in if it survives you are OK

Originally Posted by piwanoi

Originally Posted by storm1fishing

Try painting a coat of clear resin and while it is still wet , put a layer of fiberglass mat, and then another coat of resin.

That will work 110% All he has to do is drain the pond let the bottom and sides dry out and apply as you say , It cannot fail

Are you willing to put money on the 110% Fibreglass job
I think that you could talk to a swimming pool manufacture.
1 that uses Vinyl liners, it would be very quick to install your self.
Only use fibreglass if you know how & you know how to stop it from killing your fish.

Originally Posted by piwanoi

Originally Posted by Ratchaburi

It is not that easy to do it in fibreglass, as if you do it wrong, you will kill the fish.

They sell fibre glass liners for fish ponds world wide , you just have to let it cure for a while , as an experiment just leave it a day or so filled with water once its set ,drain it and fill again and throw one fish in if it survives you are OK

When you buy a fibreglass fish pond, it come of a mould the surface is hard & cured.
Yes it is OK.
Now lets look at it the other way, now you layup the walls & floor of your fish pond.
Now you need to make sure there are no pin holes or the water will pass through
the fibreglass.
Now you say give it a coat of resin & what resin are you going to uses.
Also what would you add to the resin.

Mark how big is your fish pond.

I have used Silicate of soda (isinglass) just brush it on.

Originally Posted by Ratchaburi

Originally Posted by piwanoi

Originally Posted by storm1fishing

Try painting a coat of clear resin and while it is still wet , put a layer of fiberglass mat, and then another coat of resin.

That will work 110% All he has to do is drain the pond let the bottom and sides dry out and apply as you say , It cannot fail

Are you willing to put money on the 110% Fibreglass job
I think that you could talk to a swimming pool manufacture.
1 that uses Vinyl liners, it would be very quick to install your self.
Only use fibreglass if you know how & you know how to stop it from killing your fish.

There are millions of small boats made of fibreglass and they are snuff dry inside

Had a similar problem last year. Local Thai contractor who was worked with concrete, mixed together the dry concrete mix, water and a special water proofing powder stuff. I was told all experienced concrete workers knew about the stuff. Worked for us; no more leaks.

Originally Posted by piwanoi

Originally Posted by Ratchaburi

Originally Posted by piwanoi

Originally Posted by storm1fishing

Try painting a coat of clear resin and while it is still wet , put a layer of fiberglass mat, and then another coat of resin.

That will work 110% All he has to do is drain the pond let the bottom and sides dry out and apply as you say , It cannot fail

Are you willing to put money on the 110% Fibreglass job
I think that you could talk to a swimming pool manufacture.
1 that uses Vinyl liners, it would be very quick to install your self.
Only use fibreglass if you know how & you know how to stop it from killing your fish.

There are millions of small boats made of fibreglass and they are snuff dry inside

You can use fibreglass but you need to know what you are doing as it can kill the fish.
To build a boat is easy to make a fibreglass fish pond on a mould is easy,
But to use fibreglass in side of a fish pond you have to know what you are doing,
or you will kill your fish.
This is not a maybe, it will kill your fish.

Originally Posted by Ratchaburi

Originally Posted by piwanoi

Originally Posted by Ratchaburi

Originally Posted by piwanoi

Originally Posted by storm1fishing

Try painting a coat of clear resin and while it is still wet , put a layer of fiberglass mat, and then another coat of resin.

That will work 110% All he has to do is drain the pond let the bottom and sides dry out and apply as you say , It cannot fail

Are you willing to put money on the 110% Fibreglass job
I think that you could talk to a swimming pool manufacture.
1 that uses Vinyl liners, it would be very quick to install your self.
Only use fibreglass if you know how & you know how to stop it from killing your fish.

There are millions of small boats made of fibreglass and they are snuff dry inside

You can use fibreglass but you need to know what you are doing as it can kill the fish.
To build a boat is easy to make a fibreglass fish pond on a mould is easy,
But to use fibreglass in side of a fish pond you have to know what you are doing,
or you will kill your fish.
This is not a maybe, it will kill your fish.

Why ?

^ it's all moot as he has a tiled tank.
Fibreglass resins if properly mixed and properly cured are not toxic, even though the base chemicals are.
But it would be easy to make a mistake if you were not experienced...

I am most grateful to all the kind people who have made suggestions on how to fix my fishpond. Thank you very much. I will report in due course how it all worked out.

Originally Posted by mark4music

I am most grateful to all the kind people who have made suggestions on how to fix my fishpond. Thank you very much. I will report in due course how it all worked out.

You forgot to tell us what species of fish you are keeping!, I have quite a large aquarium and keep 3 different species of Gourami's ,4 species of Cichlids ,and a few silver barbs ,plus about 6 or 7 other small assorted ones , its a fascinating hobby sure enough, the secret is keeping the water "right" as far as filtration and oxygen content goes ,once you have "cracked" that, its easy as falling off a log

Originally Posted by storm1fishing

Originally Posted by Ratchaburi

Originally Posted by piwanoi

Originally Posted by Ratchaburi

Originally Posted by piwanoi

That will work 110% All he has to do is drain the pond let the bottom and sides dry out and apply as you say , It cannot fail

Are you willing to put money on the 110% Fibreglass job
I think that you could talk to a swimming pool manufacture.
1 that uses Vinyl liners, it would be very quick to install your self.
Only use fibreglass if you know how & you know how to stop it from killing your fish.

There are millions of small boats made of fibreglass and they are snuff dry inside

You can use fibreglass but you need to know what you are doing as it can kill the fish.
To build a boat is easy to make a fibreglass fish pond on a mould is easy,
But to use fibreglass in side of a fish pond you have to know what you are doing,
or you will kill your fish.
This is not a maybe, it will kill your fish.

Why ?

Resin is a chemical if used wrong the fish will die
You need to know was you are doing with these chemical.
Lets look at it this way what resin would you use, a list below

UNSATURATED POLYESTER RESINSPRODUCT
CODE DESCRIPTIONAPPLICATIONORTHOPHTHALATES OP1001General Purpose Laminating ResinConstruction,Automotive,Electrical,Sports, LeisureOP1004Cultured MarbleCultured Marble,Polymer ConcreteOP1010Fire retardant ResinConstruction,Automotive,ElectricalOP1012Resin Transfer MouldingAutomotive,Furniture,Sports,IndustrialOP1016Putty ResinPolyester PuttyOP1017Resin for SMC/DMCAutomotive,ElectricalOP1O27Filament WindingConstruction,Industrial,ElectricalOP1036PultrusionStructural,Industrial,construction,ElectricalTP1004Tropicalized ,Thixotropic Laminating ResinConstruction,AutomotiveTP1006Preaccelerated,Tropicalized, Thixotropic Laminating ResinConstruction,AutomotiveISOPHTHALATES IP1003Chemical Resistance,Lloyds approvedChemical resistant equipment,Marine,ConstructionIP1004Resin for SMC/DMCAutomotive,ElectricalIP1006PultrusionStructural,Industrial,construction,ElectricalIP1008SMC Resin.Higher viscosityAutomotive,ElectricalIP1017Fire retardant laminating ResinConstruction,Automotive,ElectricalIP1019Filament WindingConstruction,Industrial,ElectricalIP1029Chemical ResistanceChemical resistant equipment,Marine,ConstructiomTP1005Tropicalized ThixotropicChemical resistant equipment,Marine,ConstructiomGELCOATSTP1001Orthophthalic based gelcoatConstruction,Automotive,Electrical,Sports. LeisureTP1002Isophthalic based gelcoatChemical resistant equipment,Marine,TP1003ISO NPG gelcoat,Lloyds ApprovedChemical resistant equipment,Marine,SPECIALITY RESINSBP1001Bisphenol ResinCorrosion resistant linings,chemical equipmentVE1001Epoxy Resin based Vinylester ResinCorrosion resistant linings,chemical equipmentVE2001Novalac Epoxy vinylester ResinCorrosion resistant linings,chemical equipmentVE2002Novalac Epoxy vinylester Resin(High HDT)VE3001Brominated epoxy Resin based Fire Retardant Vinylester ResinCorrosion & Fire resistant linings,chemical equipmentSATURATED POLYESTER RESINSPP1018Solvent (Xylenol / Solvasso150) based polyester ResinStoving enamelPP1002Water Dispersible Polyester ResinStoving enamelFG Size PlusWater Dispersible Polyester ResinFiberglass tape lamination

Now I will chose TP 1003 as it is top of the range polyest resin.
But using the best resin still can kill your fish.
You need to add a chemical to the last coat of resin as well using the right amount of MEKP ( Catalyst ) not a small amount & not a large amount (2%)
But there is 1 more thing that you will have to do & if you don't do this then your fish will die.

Piwi, I don't suppose he forgot. He was probably trying to fix his tank

as has been mentioned, the tank is tiled so a lot of the suggestions would just make a mess and not work well

Dr. Andy has the right approach. Actually, if you have been filling up the pond every day then you should have a good idea on what level the leak occurs.Anyway, this has been my experience.

If a large leak some squirts of food dye may help.

Necron I would green yu mate, you will have to wait till tomorrow, as my Tab will not let me
That is a good idea also if he has pipe it could leak from there, so the veggi die is a good option.