Hi everyone, new to the forum and new to saltwater. I'm in Nottingham UK, I have a 125l setup with 16kg LR, no sump (yet), but running an external filter with floss, phos remover and carbon that is cleaned weekly, along with a Deltec MCE300 skimmer, and a couple of powerheads that give me 30x turnover. Tank lid has been rebuilt to replace the T8s with 2x 24w T5s (14k) plus a blue LED bar. Weekly water changes of 25l keep the water in good condition, although I have been topping up the KH in the recent hot weather.
The whole setup is now 2 months old. I tested every day to begin with, built photoperiod from 30min blue/60min full/60 min blue up to 30 min blue/12 hours full/60 mins blue, and have had minimal algae problems so far.
After 3 weeks some cuc was added - 2 bluelegged hermits, 2 red hermits, 2 astrea snails. A week later, some red discosoma and a frag of green star polyps went in. 2 weeks later 3 more hermits and 3 more snails, along with some pink zoas, and last week I added a royal gramma, a blood shrimp, and a gorgeous green euphyllia glabrescens. There are a few hitchikers, including zoas and what look like pink star polyps, along with of course bristleworms, a couple of aiptasias, and some red bamboo algae

All currently doing well on a diet of a small amount of frozen zooplankton two days out of three, and some garlic and brineshrimp once a week.
Current parameters:
Sal: 1.025
PO4: 0.0
NO3: 2.0 (higher than I'd like, but currently adjusting the feeding - normally <1.0)
KH: 7.9 (currently dropping appx 0.6 per day and being replaced)
Mg: 1380
Ca: 410
I think the KH problem is due to the hot weather increasing the coralline algae growth. It's spreading like a winestain at the moment.
Looking forward to being part of a friendly and informative group of people with the same obsession