You can connect 2 capsule lights with a capsule link. Remember to remove the C-ring from the inner capsule and replace it with a capsule o-ring before putting the 2 capsules in a tube :)
Please note that some older capsule shells are not compatible - we will send you free up-to-date shells if you email us a picture of your current shell and cover postage. Here are the things to consider:
Compatible shell: If you have a capsule shell that is long enough to house a knot in the leash end, and splits symmetrically at the knot end, then YES it is compatible.
Donut shell: If you have a capsule shell that is long enough to house a knot in the leash end and splits asymmetrically and you can't easily remove the leash, it will fit in the tube, but is difficult to combine with other capsules or re-attach a leash to. Sorry about this one guys we went overboard with poi-leash security!
Short shell: If your capsule shell is too short for a knot and only fits a washer with melted leash-end, then it will be slightly too thick for the tubes due to early development modifications to the mold.
If you have the short or donut shells, please contact us via our support system.