Hey all. I've had my tank going for almost five months now, and all the parameters were finally stabilising to the point there was no more than 5ppm of nitrates whenever I do my weekly water changes. I just added a small sailfin tang, golden headed sleeper and a pectinia coral this saturday and checked my pH the next day and it was bright yellow. I gradually put enough buffer in to bring it back to 8.3 over a period of about 6 hours. Then this morning I went in to do my rounds and again my pH is bright yellow. I assume it's to so with my tank adjusting to the new bio load but is this normal? Could it also have to do with the fact that on Friday I upgraded from two 30w T5s to 120w blue and white LEDS?
Size. 150L (39g)
Temp. 24°C (75°f)
pH <7.4 (currently buffering up)
Inhabitants: 1 ocelllaris clown, 1 bta, 1 pink bubble anemone, duncanops (one big frag I broke into three), 1 cabbage brain coral, 1 maze coral, 1 palm tree coral, 1 jardinei, 1 plate coral, 1 heliofungia, a rock with zooanthids and a flame lobster. (Also a recovering gonipora that has only one tiny polyp on its skeleton) as well as the new residents mentioned above.
Note: I realise my phosphorus and hardness are high, I'm working on a tiny brown algae issue and talked to my LFS
about my unusually high KH
and they said it was weird but shouldn't have too much of a detrimental effect, as other than water changes and adding calcium there's not really any other way to bring it down to what it should be (if this is incorrect please let me know