Sorry i didnt see question sooner.
The lamps brightness shouldnt be affected by the length of the ballast-refelector cable, but as was pointed out bulbs output alters as they age. They atart off giving off a slightly lower amount which rises to a peak amount within a few hundred and then start to get lower after that. For that reason it is a good idea to replace your bulbs every 2-3 crops max....you can use the same lamp for a few years theoretically but your yields will degrees more and more over time and you will still be usin the full amount of power....
The length of the lead from ballast to reflector can be too long though...depending on the type/quality of the ignitor this varies from 1.5 metres on the really crap ones to 4 metres on the better ones. these industrial Low Bay type lights we are converting here are generally made with a crappy ignitor as they are after all built with the ignitor a few inches at the most from the lamp. If you can get a suitable ignitor to replace it with it is worth doing.
In a couple of month there will be a new new version of this with built in timer and contactor, and possibly with the reflector end utilised for an air cooled hood
The lamps brightness shouldnt be affected by the length of the ballast-refelector cable, but as was pointed out bulbs output alters as they age. They atart off giving off a slightly lower amount which rises to a peak amount within a few hundred and then start to get lower after that. For that reason it is a good idea to replace your bulbs every 2-3 crops max....you can use the same lamp for a few years theoretically but your yields will degrees more and more over time and you will still be usin the full amount of power....
The length of the lead from ballast to reflector can be too long though...depending on the type/quality of the ignitor this varies from 1.5 metres on the really crap ones to 4 metres on the better ones. these industrial Low Bay type lights we are converting here are generally made with a crappy ignitor as they are after all built with the ignitor a few inches at the most from the lamp. If you can get a suitable ignitor to replace it with it is worth doing.
In a couple of month there will be a new new version of this with built in timer and contactor, and possibly with the reflector end utilised for an air cooled hood