monarch catapillers

[napapen]

I have 7 monarchs I am raising in the house.  I have been reading alot
of info on the internet about when they go into pupa stage.  Mine are
47mm long (+or-) and are eating like pigs.  I fear I will run out of
milkweed before they change.
Will putting a light over the area I am raising them in speed things
up abit from the light and warmth.  Right now it is cool and overcast
in Napa and they are just sitting and not moving much.

Thanks   NapaPenny

 
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