So I tested everything and it looks like my Alk is low. It’s a 55 gal and I’m doing 10 gal water changes every week. What can be sapping all the alk? Note, my torches and leather corals are fine but my Duncan, certain zoas are struggling big time.
Measurements
PH- 7.8
Temp- 76
Salinity-1.026
Ammonia-0
Nitrite- looks like .05 but might also be 0
Nitrate-4
Calcium- 420
KH- 3.21 (low)
Any and all suggestions would be much appreciated. Tank is a year old and it was a FWOLR, as of 3 months I turned it to reef but it’s been struggling. Fish are fine and I do over feed but I over filtrate as well I have a HOB as well as a Canister filter.
![1C777B29-CF05-4DB8-94A7-F7D1EF205CE8.jpeg 1C777B29-CF05-4DB8-94A7-F7D1EF205CE8.jpeg](https://test.reef2reef.com/data/attachments/2907/2907346-a08ba9cc528087be7ba1dca10877697e.jpg)
Measurements
PH- 7.8
Temp- 76
Salinity-1.026
Ammonia-0
Nitrite- looks like .05 but might also be 0
Nitrate-4
Calcium- 420
KH- 3.21 (low)
Any and all suggestions would be much appreciated. Tank is a year old and it was a FWOLR, as of 3 months I turned it to reef but it’s been struggling. Fish are fine and I do over feed but I over filtrate as well I have a HOB as well as a Canister filter.
![DFE24121-E9A1-4558-B3BC-A852E189FBC7.jpeg DFE24121-E9A1-4558-B3BC-A852E189FBC7.jpeg](https://test.reef2reef.com/data/attachments/2907/2907342-43c580f09190eb880cc5a9018827b197.jpg)
![FD8D6B72-7989-4991-9644-ED60A816E028.jpeg FD8D6B72-7989-4991-9644-ED60A816E028.jpeg](https://test.reef2reef.com/data/attachments/2907/2907343-0f5c05b584f86ed8a473e38472e8b9b2.jpg)
![21206FA4-52DC-4BFE-99A7-D4AC15960A46.jpeg 21206FA4-52DC-4BFE-99A7-D4AC15960A46.jpeg](https://test.reef2reef.com/data/attachments/2907/2907344-16b10df9c08ba7f02733b04b4492cb9a.jpg)
![701738C4-6F69-4872-B7B7-FE3324300677.jpeg 701738C4-6F69-4872-B7B7-FE3324300677.jpeg](https://test.reef2reef.com/data/attachments/2907/2907345-4f0170efb88b8a745e5363ce88c496d2.jpg)
![1C777B29-CF05-4DB8-94A7-F7D1EF205CE8.jpeg 1C777B29-CF05-4DB8-94A7-F7D1EF205CE8.jpeg](https://test.reef2reef.com/data/attachments/2907/2907346-a08ba9cc528087be7ba1dca10877697e.jpg)