I have a 2-3yr old mixed system ~67gal DT (4'x1.5'x1.5' echotech return and 2 Nero 5's for flow) and 15gal sump and have been struggling to care for acropora. I have other "less fussy" SPS that seem to do well (monti digitata and plating, Pocillopora and pavona) but acro success has eluded me.
Specifically im starting to see some bleaching or burning at the tips from a few of the frags and would love some tips from folks on how to treat and correct the problem (Pix attached). My theories are alk swings vs too low nutrients? I use the 4head older model Jebao dosing pump to dose ESV 2part (2ml every hour on the hour for 12hrs during the day, considering moving to the night). I feed a few PE pellets on an eheim feeder and feed mysis nightly, until the greedy Kole Tang is done. Other recs are greatly appreciated.
Parameters:
PO4: 0.03-0.07 Hannah (depending on coral feeding the day prior, running GFO)
NO3: 0.02 Salifert (hasn't moved in a while running skimmer and refugium)
pH: 7.7-8.0 on APEX (Considering switch to alk, other measures have failed to increase pH)
Alk: 8.5 - 8.9 Hannah depending on time of testing, usually from 6-9pm (considering moving dosing to after lights go out)
Ca: 325-375
Mg: wnl
These pictures are before lights come up in the AM. Can take more if helpful.
Thanks in advance,
Specifically im starting to see some bleaching or burning at the tips from a few of the frags and would love some tips from folks on how to treat and correct the problem (Pix attached). My theories are alk swings vs too low nutrients? I use the 4head older model Jebao dosing pump to dose ESV 2part (2ml every hour on the hour for 12hrs during the day, considering moving to the night). I feed a few PE pellets on an eheim feeder and feed mysis nightly, until the greedy Kole Tang is done. Other recs are greatly appreciated.
Parameters:
PO4: 0.03-0.07 Hannah (depending on coral feeding the day prior, running GFO)
NO3: 0.02 Salifert (hasn't moved in a while running skimmer and refugium)
pH: 7.7-8.0 on APEX (Considering switch to alk, other measures have failed to increase pH)
Alk: 8.5 - 8.9 Hannah depending on time of testing, usually from 6-9pm (considering moving dosing to after lights go out)
Ca: 325-375
Mg: wnl
These pictures are before lights come up in the AM. Can take more if helpful.
Thanks in advance,