Hot glue or dip wick in gel to set to bottom of your container.
If wicks are wax coated, dip in hot gel before setting in container. 

This reduces the amount of bubbles from the wick.  It is better to use

un waxed wicks like the ones we supply especially for gel candles. 

The wick size should be in accordance to the size of the opening of

the container you are using.  For example if you are using a 2-3 inch

width container then We suggest you try our small  wicks these wicks

have a melt pool of 3 1/4 inches.  If you are using other suppliers gel that is

extra thick, (gelly) then We have found the melt pool is quite a bit smaller

and burn time is faster.  You may want to use a larger size wick. 

See our wicks for specks. on wick sizes.
Medium wick in our gel has a melt pool

(Amount of gel that burns around the wick)

 of 3 to 4 1/2 inches.  The large wick has a melt pool of 4 to 5 1/2 inches.

It is best if you are using a container larger than that to use 2 to 3 wicks

placed evenly spaced in the candle.  Be careful when doing so not to get

the wick too close to the edge of the container which will cause heat damage

 and breakage.  When using several wicks you may have to experiment with

the wick sizes.  Remember always trim your wick to 1/4 of an inch for

better burn time and to prevent mushrooming and black residue in the

bottom of your candle.  Always use a wick with a stem due to the fact

that gel burns completely leaving no residue and the heat from the

flame on a flat tabbed wick will break the container.  Our wicks are especially

designed for gel candles and the stem will put the flame out before

it reaches the bottom of the container and causes breakage.