Dude, your system is too advance and clean for LPS.
Nicely setup, start adding some SPS![]()
Here is what I would do if it were my tank...
Stop auto water change.
Not sure if your RODI has chloramine blocks but add Prime to both tank in the sump and also top off
Can't tell if it's a reactor in your return chamber...if it is then turn it/them off
Adjust skimmer to skim dry or just turn off
Take dosing off
This is the most important...Feed the crap out of the tank. However, I don't see any fish so you may have to do amino. Keep on doing it until you see algae the more the better. Feed phyto if you have it. Keep on feeding.
Even if you keep SPS...do the same thing.
I get my frozen from Tong's in FV so don't mind stopping by to check out your tank. No charge if your corals die or live LOL
What kind of salt are you using? I see instant ocean box but just checking.
Oh....and why do you use the inkbird thing when you have apex?
If u prefer lps and softy then save your money and forget about water change. They will thrive at phosphate > 1 and nitrate > 10 ppm. I just went through a similar event with my tank with zero phosphate N zero nitrate.
when my no3 and po4 were running to low I emptied liquid skimmate back into sump and turned off skimmer.What do you mean by that? Actually dump the skimmate back into the water?
Good finding. You know your problem now.
Very nice investment into that PAR meter, please let me know if you are willing to rent it out? I need some tuning on my lights also
Sent from my iPhone using Tapatalk
hopefully it's that simple of a lighting issue. Keep us posted.
If your phosphate is at 0 then your corals are starving. Turn off skimmer GFO anything regarding reducing phosphate. Let your tank run a couple weeks u will see improvement. How is your Coraline algae when u see pink Coraline start growing on the wall thats the indicator that your water chemistry in balance.
I got a new Apogee 510 PAR meter today. Looks like I'm only getting ~85 PAR at the top with Kessils at 45%. I'm now thinking that with the low light and zero phosphates my corals simply are starving. So disappointing.
Here's a quick and dirty shot from today. Kessil A350W 24" above sand, about 5 inches over tank. Meter said 1153 at the surface and 170 on the sand. About 350 at the top of the big birdsnest. Meter is 2 months old so I'm confident it's calibrated. I'm using their new 3 piece wand to hold the sensor so I can control it quite well.
See the Kessil shadowing ? Yup.
See the uneven growth caused by the shadowing ? Hmmm, can't find it.
NSW 35 ppt
CA 460
Alk 7.5
Mg 1600
![]()
They would bleach first and then die off if it was the light. How come everything else is doing fine at 85 PAR? I don't even believe that it's this low. Kessils are strong. ANd you even said that you bleached one coral when you increased the intensity. If it's truly 85 then increasing it by a couple % would not lead to bleaching.
I saw that you have a lot of equipment. Why don't you take everything offline and take care of the tank manually? The more equipment you have the more variables you introduce.
I'm not sure if anyone has mentioned this but have you thought about pests, parasites or chemicals in your water? Run GAC, do a couple 25% water changes to replace all the water in your tank and then basically start over. Like I said, monitor everything manually and dose ALK,CA,MG manually and don't dose anything else.
I don't know why you mentioned BRS. They just came to the same conclusion that the Kessils aren't as powerful but they didn't say that 85 par will kill corals... You have 5 Kessils. Five dude!!! There are many people who use Kessils with great success and they do not have your problems. I've seen SPS only tanks with Kessils.
You're saying your readings are accurate and the guy's readings I quoted must, therefore, be wrong because YOU are infallible since you have been in the hobby for 20 years, right?:rollface: How do you know your PAR meter is accurate? Just because it's new it means it's accurate? How much doe the 20 years add to your 'experience' when you have to offer someone to pay them to help you? :headwallblue:
Just think about what you said. You said you turned up the intensity and the coral bleached and then you went ahead and concluded that not enough PAR is killing your corals. How does that make sense?
Tidalgardens states that 50-150 par is low to medium lighting. Even SPS can do fine in 85 par if the spectrum is right.
The store I worked at had the shittiest LED fixtures from China, Tawain and what not, 10 -20 years old and super dim, nitrates were around 160ppm, skyrocketing phosphates etc. yet his corals (LPS AND SPS) were doing OK and of course, softies were doing great. Just OK, but they were alive and you can't keep your corals alive under high tech Kessil LED's? Yea sure. You're deceiving yourself.