I have a 60 gal reef with 40 gal sump. I have reef octopus 110, algae scrubber 50.
salinity - 1.021 maybe 1.022
Calcium - 340
KH - 4DKH / 71.6 PPM
Phosphate - .25
Nitrate - 0
Lighting is AP700.
everything in the tank appears to be going well. I’m slowly dipping my toe into SPS Corals. When should I get into the dosing game? How can I slowly raise my salinity? Any of you guys have a spare doser you wanna contribute to a good cause lol.
thanks for reading,
David -KCMO
Nice looking tank David! How long has it been running?
Things to work on:
salinity - 1.021 maybe 1.022/ How can I slowly raise my salinity?
Add some salt to get the SG a little higher. I run mine between 1.025 and 1.027. It takes quite a bit of salt to raise 100g of water from 1.022 to even 1.023. So just take some of your reef salt and sprinkle it into your sump and 15 minutes later test the SG until you get it where you want it.
Calcium - 340
This is low but OK given your current corals. Stony corals will want a higher Ca like 400 or even 425ppm.
KH - 4DKH / 71.6 PPM
Am I reading this correctly, your dKH is at 4.0? That's too low. Alk should be at least 5.0 or 6.0dKH, even with soft coral. And for sps it will be even higher, like 7.0 or 8.0dKH. At 5.0dKH some sps corals will die!
Are you currently adding any Ca or alk manually?? Or are you keeping levels up through water changes? Have you ever used a reef chemistry calculator? This is the site I use:
When should I get into the dosing game?
If you aren't now, you'll need to start checking Ca and alk every so often. I check mine once a week. You should do it more than that until things get stable at better levels. You can start by doing the dosing manually. I have a mostly zoa tank with a few lps and sps and I dose manually twice a week. Having a dosing pump is a nice benefit, but doing it manually and taking the time to do it, keeps you more involved in watching the stability.
If you need help knowing how to set up and start dosing with a pump, just ask. It's not hard, but it can be a bit tricky in terms of the math and calculating how much to dose.
One other thing to consider is flow. Most sps corals like somewhat higher flow. Do you know how many times your tank water turns over? Are you aware of just what 'turn over' is in a reef tank? If not, ask. I didn't know about it at first either!