Cinder Blocks and koi

[Peggy’s pond]

I’d like to use cinder blocks in my 35,000 gallon pond but I heard it leaches unless sealed. Can I seal them with vinagre? Or any suggestions? I have about 20 koi and pond is well established.

 

[Bluerooster]

How many blocks, and what do you plan for them? I would think that 35k gallons would dilute any calcium that may leach from a few blocks.

 

[GBBUDD]

Not a clue what vinagre is . after building your block walls you can apply fiberglass probably the best option. plaster like a pool. Epdm rubber. Welded pvc, And there's water proofing paints last of my choices.

 

[GBBUDD]

How many blocks, and what do you plan for them? I would think that 35k gallons would dilute any calcium that may leach from a few blocks.

I don't believe you can use cinder blocks alone they won't hold water.

 

[Jhn]

Are you using them to sit plants on and boost them up or build the pond out of. If the former I wouldn’t worry about it.

 

[Peggy’s pond]

Using them to lift plants. It’s a converted underground swimming pool and I wanted to distribute some planted bog plants but need to prop up the planters.

 

[Peggy’s pond]

Not a clue what vinagre is . after building your block walls you can apply fiberglass probably the best option. plaster like a pool. Epdm rubber. Welded pvc, And there's water proofing paints last of my choices.

Thank you
Those are great options

 

[Peggy’s pond]

Are you using them to sit plants on and boost them up or build the pond out of. If the former I wouldn’t worry about it.

Thank you

 

[j.w]

@Peggy’s pond
I believe she meant vinegar. I have no clue what that does to blocks.
I've used the red bricks before and also some of the grey concrete ones w/no issues.

 

[poconojoe]

You can also use plastic milk crates with no adverse effects. Plus they are not as heavy and will not hurt the liner like a concrete block might.

 

[Peggy’s pond]

View attachment 127484@Peggy’s pond
I believe she meant vinegar. I have no clue what that does to blocks.
I've used the red bricks before and also some of the grey concrete ones w/no issues.

Thank you
And yes... I meant Vinegar. i was told that it reacts with surface of block and seals/ neutralizes the surface

 

[GBBUDD]

Thank you
And yes... I meant Vinegar. i was told that it reacts with surface of block and seals/ neutralizes the surface

if your going to do it do it right go to the depot and get mariachi acid every hardware store has it. wear gloves and glasses.dont let the acid scare you its not going to eat your arm off follow the directions very easy

 

[Peggy’s pond]

if your going to do it do it right go to the depot and get mariachi acid every hardware store has it. wear gloves and glasses.dont let the acid scare you its not going to eat your arm off follow the directions very easy

I’m almost thinking you’re messing with me. Mariachi Acid? If they laugh at me when I ask for it ..... I’m sicking my jackalope on you.
I’ll give it a try

 

[poconojoe]

Hold onto your jackalope, it was probably a spell checker thing! I really can't say for sure, just a guess. Maybe he meant muriatic acid?

 

[GBBUDD]

I’m almost thinking you’re messing with me. Mariachi Acid? If they laugh at me when I ask for it ..... I’m sicking my jackalope on you.
I’ll give it a try

I'm not !!!!! spell check is "MURIATIC ACID" That is what all profesional masons use to clean new masonry. or old for that matter