“I have had one of these lights for years with no problems, I had another that turned faulty and fixed under guarantee but repeated fault again after guarantee so ended up binning it. I think you either get a good one or not in my experience but if you get a good one then it is a greta light for the money really.”
“I was recommended to try this Magnesium test by a YouTube video. As with a lot of titration tests they are fiddley and take time, but worth it to keep a check on what is happening in a reef tank. This particular test comes with a reference solution so you can see when and where the colour change may happen and what colour you are looking for. Read the instructions beforehand and you should be good _ﾙﾔ”
