if you cant get a heater to heat try putting the pots on polystyrene foam pads to keep them off the floor, put bottles of water in the room (water holds it temp for quite a time).
id start that off @ 1/4 strength and work it up too full strength. plants can take any amount of nutes providing you build them up to that level. doesnt mean youll get bigger/better yield jsut coz you upped the nutes
i have solar panels.
it makes enough energy to run the house and garden and still get me a cheque at the end of every year from the power company for excess i created
has anyone seen these ?
http://www.1000bulbs.com/product/36912/FC2009-S50272PK.html
are they switchable or do they put out both together ?
i wouldnt have thought both together would work....
i have my 3 week old seedlings under a 400w HPS that is about 2 hand widths above them and 2 x 100mm computer fans blowing between the plants and lights. temp sits on 27 all day long