Doc Holliday Posted May 22, 2017 Report Share Posted May 22, 2017 Hi guys, I'm bck on to the subject of my pond once more but this time I just need advice as to what's best used for fixing cobbles (as in large pebbles) and flag stones in situ. Good old sand & cement (if so then what ratio? 3:1?). Or maybe something like Stixall (PMS Polymer hybrid but have yet to consult manufacturer as to whether it can be used for aquatics). Some of them will be submerged so I can have marginals so I would also like to know if there is a period to wait before adding plants and fish? The pond size is only about 2000 litres (6' x 3' x 1.5') and will be looking to use a Bioforce Revolution 3000 pressurised filter with an Aquaforce 2500 pump, unless anyone has a better recommendation. Pump will sit in the deepest section of pond (approx. 600mm) pump to the filter and up to a ruddy great glazed urn/vase thing Mrs H bought a couple of years back for the water to discharge into a secondary header before going over a copper ledge which will act as a water fall in to the main pond. Total height is about 1.2m and total length of 25mm pond pipe is about double that. Thanks in advance. Quote Link to comment Share on other sites More sharing options...
Cosd Posted May 22, 2017 Report Share Posted May 22, 2017 Ping Denny Essex a PM, he should be able to advise Quote Link to comment Share on other sites More sharing options...
vampire Posted May 22, 2017 Report Share Posted May 22, 2017 The 3:1 ratio in sand/cement is right for the job,don't know about the polymer ! Quote Link to comment Share on other sites More sharing options...
figgy Posted May 22, 2017 Report Share Posted May 22, 2017 (edited) Seen aquatic people use bog standard silicone sealant to fix cobbles and other rocks in place for ponds and large aquariums. They hold the stones in place see where they touch and a spot needs putting then glue them all in place. Edited May 22, 2017 by figgy Quote Link to comment Share on other sites More sharing options...
kyska Posted May 22, 2017 Report Share Posted May 22, 2017 Not that I know about pond architecture, I do about water chemistry and I'd steer clear of ANY copper components. Quote Link to comment Share on other sites More sharing options...
Doc Holliday Posted May 23, 2017 Author Report Share Posted May 23, 2017 Not that I know about pond architecture, I do about water chemistry and I'd steer clear of ANY copper components. Thanks for that Kyska. A quick online search indeed flagged up copper elements in ponds a big no-no, especially when looking to have fish in the pond. I did speak to the manufacturer of Stixall and they have also confirmed their product is not 'fish safe'. Will PM Denny Essex as he is the go-to-guy where ponds are concerned. Quote Link to comment Share on other sites More sharing options...
kyska Posted May 23, 2017 Report Share Posted May 23, 2017 Thanks for that Kyska. A quick online search indeed flagged up copper elements in ponds a big no-no, especially when looking to have fish in the pond. I did speak to the manufacturer of Stixall and they have also confirmed their product is not 'fish safe'. Will PM Denny Essex as he is the go-to-guy where ponds are concerned. Good job! That would of ended up potentially very sad for your fish! Quote Link to comment Share on other sites More sharing options...
vampire Posted May 23, 2017 Report Share Posted May 23, 2017 Think its plastic solvent weld pipe is the stuff to use,copper kills bacteria etc which is why its used in domestic plumbing and on hospital door pushes. Quote Link to comment Share on other sites More sharing options...
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