I have 6% forest in an 11inch height and was getting 4.8 UV on a new bulb and almost that now a few months later.Having the UV switching the same time as the basking lamp will be short-term until I sort out another timer, can then have them operating independently.
Looking at the height of the Vivarium we're likely to swap to in the short-term, it's just under 20" in height. With Tortoises being Zone 3 it looks like the 6% forest kit is what I'd need, as the 12% output would be too high?
Would you recommend LED strip lighting or LED bulbs? Would have thought bulbs would generate a better spread of light.
I take it you mean these? https://www.reptiles.swelluk.com/arcadia-solar-basking-floodlight
That would go along with one of their CHE's (https://www.reptiles.swelluk.com/arcadia-ceramic-heater) in a lamp cage, just need to work out the W required.
Beware some bulbs have min distances...I would consider 10inch the absolute closest really.