Hi there. I was wondering which lights are 'OPTIMAL' for growing indoor herbs and flowering plants.
I saw a T5 fluorescent bulb, 14W that can be interconnected up to 6 bulbs. I could probably use 4 using a reflector combining 2 coolwhites and 2 warm whites.
I am currently using 1 15W cool daylight and 1 15w warm white Philips spiral bulb (just hangging 2-4cm above the seedlings, 12hrs / day) no reflectors.
https://www.philips.co.uk/c/Energy-savin ... 70100/prd/
I noticed that my thyme and sweetbasils are thriving using spiral bulbs, they already have 4 leaves each. However, lettuce seedlings still have small leaves in them and they are about 21 days already(it says in the pack that you can harvest it in 35 days under partial sunlight) I have a small growing area probably around 40cm by 60 cm, it is not that big.
So my question is, what bulb is efficient? Should I ditch the spiral (I am planning to add anoter 2x 15w to make it 60w) and switch to T5 (56w) setup? Which one is better?