Unipac Black Limpopo sand..
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VikingMummy2015
- TOTM Winner
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you can definitely just move substrate over. The tropica soil I added to mine was from a couple of the other smaller tanks, added to the new sand. I've re-used substrate several times over the past 3 years.
240L Fluval Roma with Oase 600 Biomaster: 1 German red bristlenose, 4 male cherry barbs, 6 standard rummynose, 3 golden rummynose tetra, 9 emperor tetra, 14 cardinal tetra, 2 hengeli rasbora, 3 nerite snails, 1 adult Sulawesi snail and multiple juveniles continually appearing.
Parameters: gH2, kH1, pH7.4 (tap).
Fish fiend since October 2017.
Parameters: gH2, kH1, pH7.4 (tap).
Fish fiend since October 2017.
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WinterRose73
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Decisions decisions lol 
'Take wasps,' Death continued. 'Wasps are made entirely from bastard. Whose grand design are they part of?'
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plankton
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Whenever I've moved tanks (usually because of leaks or curtain rails) I've moved as much as I can, including sand.