naturepics43 wrote:
The "murky" could be from light leaking thru loose connection on your tubes. Both of my auto tube sets have a little flex at the joints. Just a thought. It's easy to check, wrap electrical tape around joints on tubes. If the "murky" goes away, problem fixed. But, this may not be the problem. Good luck! Keep us posted.
Thanks naturepics43, I hadn't thought of that, I shall certainly act on your suggestion for around the joints, yes there is a little flex movement.