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Thread: OB1 sealant
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14-04-2025, 07:47 PM #1
OB1 sealant
Hi All
Has anyone used OB1 instead of CT1 ive been told that it’s the same stuff but cant see anything about it being fish safe. Need to seal the edges of the pond to my slabs around it to bring the water level up
Thanks in advance for any pointers as going to need in excess of 40 tubes
Sent from my iPad using Tapatalk
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