Why wouldn't you want to know what your PAR is in your tank? I hired one, i've now built a map of my tank (PAR was roughly as expected) and have a good idea of coral placement going forward in terms of high light / high flow etc.OK, but even after almost 4 months half of my coral are just kind of just hanging on day by day not really changing. I really don't know what I could do different. There's one thing I could get a par meter and check the par. I don't know how big of a difference that would make. I've been told so many different things about par. Keep it lower keep it higher. I just keep it kind of medium low for example at about 30% full power of what the LED can do. It's an integrated LED that came with the red sea tank. I think I'm just pretty much I've gotten to the point more recently that I'm just not tinkering. I'm just gonna let it be and as far as the LED goes I'm probably gonna keep it on medium mellow for now. Maybe raise it just a little bit, but that's all.
I have noticed, since I lowered my LED from really bright down to medium low I'm having much less dino and cyano issues. Those things are really, not a problem anymore. I'm afraid if I blast LEd I'll get more dinos etc
also, somebody on one of these forums posted a thread, how much more success they had when they lowered their LED
Anything else is just ticking in the wind IMO, expecting a coral to thrive irrespective of the conditions your keeping it in. I've not changed the light setting in my tank since day one, and thanks to the PAR reading i've no reason to do so since i know the lighting provided is enough for the corals I have.
I'm new to this hobby, but decided fairly on that i needed a plan, a plan for the equipment i would buy, when i would buy it, the fish i would keep and the coral varieties i would buy (admittedly the last one isnt robust, so much to consider and learn). Part of that plan will be to hire a PAR meter again in 18 months time once the tanks grown out.