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Okay thanks I will get the figures from the lfs, to include an alk test. Sorry, the system seemed to crash so I haven't been able to get back online since my last posting! I have been feeding more to try and get the weight on the goby, that's all. He seemed to be very thin. Do you think I should consider sending him back as he is so hard to feed and may be causing the params to become unbalanced? The other inhabitants are all cuc so it would be easier if I did take him back because I could cut the feeding right back. I did try to research the feather duster but I didn't find that they needed a mature system, they were considered to be quite easy to keep from what I read. I also had a lot of small ones hitch hike on the live rock so I saw them thriving and then looked into getting a bigger one! The tank is reaching 80 deg or slightly over at peak sun. I have frozen some bottles of water to try and get it down, but it does fall over night. The fluctuations are what is worrying me. Do you think this is the problem, apart from a possible alk issue? The pH has risen but it is not above healthy limits for marine systems; I can make out the colour enough to see that it is around 8.2 or slightly over. It seemed to change last service but not necessarily a sudden change so I hoped that it would be ok. With regards to the duster, what should I do with him? And the sessile snail?!! Thanks for your ongoing help.
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