The seneye is working really well, it is giving me updates every 30 minutes as the live rock cycles. the ammonia level is measured so finely, great for early detection of tank issues for anyone., My tank is devoid of fish stock so no concerns about the spike.
Interestingly the tank is positioned above a house LED pot lights and I am getting a good level of actinic range PAR from them, right down to 400, as the graph stops at 400 I am sure it goes lower than that! Interesting from a ceiling LED pot lamp!.