Interesting overflow Marcel & digging what you've done with the scaping...
Great build so far,with what and how did you drill the holes in the rock?

Thanks Sean, but there seems to be a misunderstanding. That's why I edited my post.
There is a problem with cash flow, so I'm far away from being fortunate.![]()
@Chris Delport if finance is not limited i am sure you will be able to consider and purchase a concrete, core drill bit at your nearest hardware store and drill the holes that way.Great build so far,with what and how did you drill the holes in the rock?
@Chris Delport if finance is not limited i am sure you will be able to consider and purchase a concrete, core drill bit at your nearest hardware store and drill the holes that way.
I am reluctant to use the hammer action on the fragile rock.
@Chris Delport if finance is not limited i am sure you will be able to consider and purchase a concrete, core drill bit at your nearest hardware store and drill the holes that way.
I am reluctant to use the hammer action on the fragile rock.
Will it not work on normal?
@Chris Delport if finance is not limited i am sure you will be able to consider and purchase a concrete, core drill bit at your nearest hardware store and drill the holes that way.
I am reluctant to use the hammer action on the fragile rock.
I agree, only the use of a glass drill bit will keep the rock in one piece.
And these glass drill bits are not that expensive. I mean, when doing what I do, how many holes needs to be drilled? It's worth it to get a glass drill bit.
If I just could find my two other bigger dril bits.![]()
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This is a rough sketch i made of what I have in mind for my four foot tank, cabinet structure.
I hope to start with this soon.
How are you going to stop water coming up the Y fittings and draining the tank through the overflow?
@Chris Delport if finance is not limited i am sure you will be able to consider and purchase a concrete, core drill bit at your nearest hardware store and drill the holes that way.
@LuckyFish is using what he has and in the end that is the best way as @seank explained - it allows for ones imagination to take over and at the end i believe it will be a great tank.
I am also forced to use my imagination due to finance limitations and i must say i am learning a lot from @LuckyFish. Observe his work and it gets one own mind into a good thinking mode!
Therefore i like the approach @LuckyFish took with regards for making 3D drawings for the designs. I wish i did that for my three foot tank, but i will do that for my four foot tank. Thanks Marcell.
I posted this :
Now the two T-piece are not connected to the overflow. I used the dremel to be able to push them over the pipes.
Compare the two pictures without the T and Y-piece. Nothing has changed. I just pushed the T and Y-piece over the existing pipe.
But you made me think now. I have to make some holes into the two pillar pipes. Otherwise there will be water in the pipes which cannot circulate.
Thanks, didn't read that part in your post.
Am I correct in understanding that you will place the rocks over the pipe and then glue the pipe into the fittings?
Does not not make removing the rocks impossible?
Edit:
To save some more cash you could have used a pipe bender to bend your overflow pipe, instead of using the R20/R30 pvc fittings![]()
Haha, you really should take your time when reading. I posted this:

Pool acid