40g needs a light upgrade. Currently using Aqualight pro

Hey everyone,
I went and bought a Salifert Alk/KH test today. Readings today were 400ppm of calcium and a dkh of 9. Do you think my DKH is too high? I know the calcium is too low. I was thinking about buying bi-onic. Before I did my top off tonight, my reading on my DKH was above a 10. Not by much but still. I guess the test strips are crap. Do you think that might have caused some bleaching in my clam and my corals to look brown? I just don't know. I topp off every day. It's been a bucket full of fresh RO DI water. Just not sure. Let me know. TY
 
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