Where to start? I suppose stating the mantra “nothing in reefing happens quickly” is the best way to begin this update. About two weeks ago I noticed a few of my acros getting excessively white tips. After close inspection (something my wife would say I do a bit too often), and comparing growth progress photos, these tips did not appear to be regular ‘growth’ tips, but rather were burnt tips. Why? Well, I could think of any number of reasons due to me making changes.
Over the past two months I’ve:
- Added three additional lights (Radion XR15 G6, AI Prime 16HD and 30W Led.)
- Increased light intensity, shooting for ~400 par at top of rocks (up ~50par from previous)
- Switched from AFR dosing to Kalkwasser nightly dosing with AFR supplement.
- Replaced refugium grow light with AI Fuge.
Too much too fast. About 5 acros showed obvious stress with burnt tips. To make things more complicated I have a large golfball sized turbo snail that rubs/slides against just about everything. A few acros have what I can only describe as snail shell burn with parts that have been what appears to be “scraped off.” I also lost my OG Green Torch recently, the flesh just slopped off it over a 24hr period. Thankfully not terribly expensive, but I’m sad to lose it.
What do? Short answer: SLOW DOWN. I’ve backed off 20% on my lights. I reduced Kalkwasser dosing to 50%. This has hurt my pH stability, but I think my alk reaching ~10 (up from 8.1 in about 2 weeks) didn’t make things happy. I stopped all AFR dosing and will focus on water changes to replace trace elements in the near-term (AFR can come when it’s obviously needed.)
My Alkalinity dKh over the last 90 days:
You can see the immediate alkalinity increase after turning on Kalk 8/23. I feel I should have slowed my ascend over a much broader time range. Live and learn. You can see over the last 10 days my alk has been slowly dropping (I’ve adjusted it to about .1 dKh/day).
I’ve recently added a CO2 scrubber, hooked up to an air pump terminating to an air stone in my sump. This has resulted in a decent increase in pH. Graph below tracks my pH, air stone was added on 10/15.
So what have we learned? I need to just take it easy. Things will grow in their own time, and I must make fewer adjustments over longer periods.
Will follow up with some photos tomorrow! I’ve really loving the Brad’s Jaw Dropper colony and how it’s responding to high par. Some pieces in the tank couldn’t care less about the swings, they’re cruising.
In other news, my wife and I welcomed our second child in to the world, a baby boy. I'm off work for the next few weeks, and coincidentally am expecting 10 new fish to arrive either Thursday or Friday. Stay tuned for some fish shots!
Obligatory baby photo tax: