Thanks everyone - I think I will add them to the bucket list. I was pretty put off by them looking like worms but seeing some videos of larger ones with colours thought they looked nice.
Updated plant list to try and keep a record somewhere. The corkscrew sword looks really neat - thanks to Mattia for knowing what I bought! I'm hoping it will take off.
First group are weeds, second think they might grow and last group is just hoping. One giant hygro left now - light too low for it sadly.
Vallisneria (narrow and broad leaf).
Ambulia.
Hygrophila polysperma.
Alternanthera reineckii (red alt)
Java Ferns (narrow leaf).
Melon Sworda.
(Giant Hygro).
Rubra (stem plants)
Echinodorus augustifolia - Vesuvius (Corkscrew Sword)
The CO2 in-line needle valves turned up and actually fit the CO2 line as well. Which is really great. Now I just need a line splitter that actually fits. On order still is:-
1 x splitter with needle valves on way from UK (fingers crossed!)
2 x cheap inline splitters with needle valves on way (backup).
Edited by Delapool, 15 July 2016 - 09:06 PM.