Need recommendations

[vostasf]

For my redsea 170
Dosing system
2. Nutrient control method (refugium or reactor)

 

[slingfox]

Dosing system: All for Reef is most simple but can get expensive if you have a lot of coral. 2-part like ESV Ionic is a nice middle ground of simplicity and cost. A 3-Part is the most economical if you DIY or you could buy one of the many off the shelf systems like Modern Reef, Tropic Marine, Nyos, etc.

Nutrient control: I prefer to have the coral be the nutrient export. I run a cryptic refugium (ie, no lights or algae) and no algae reactor and still keep nitrate at 5ppm (requires dosing of ammonia) and phosphate at 0.10 ppm by not over feeding and with a Reefmat, protein skimmer, and weekly water changes.