Under Current Frequently Asked Questions
System Setup
- Can I integrate a water chiller?
- Yes, Refer to instructions
- Can I integrate a nutrient auto dosing system?
- Yes, Visit the Automation section on our website for more information
- Can I add a top-off reservoir?
- Yes, Refer to Using a Top-Off Reservoir. Setup info: refer to Under Current Instructions
- Can I have my air pump(s) on the floor?
- No
- Can I have my air pump(s) in the room with supplemented CO2?
- No
- Can I run multiple Under Current® systems with one air pump?
- Yes, Contact Us
- Can I operate my Epicenter remotely?
- Yes, Contact Us
System Operation
- Is it possible to over-aerate my Under Current?
- Yes
- Do I need to use Reverse Osmosis (RO) water in my Under Current?
- Yes
- Should the Air Pump and Water Pump run 24/7?
- Yes
- How do I find my total system volume?
- Reference the Systems Specifications on the Under Current Products page @ cch2o.com
- Where should I set my solution level?
- Bare Root: Top of root crown
- Rockwool/Cube: Just below base of RW/cube 1/4-1/2” below NET POT planting deck.
- What nutrient solution temperatures are optimal?
- -68 degrees F. Refer to General Recommendations for more info.
Grow Media
- What grow mediums are recommended for use in the Under Current?
- Expanded clay pellets and Growstones
- Can I use soil or coco in the system?
- No
- How do I prepare my grow media?
- Refer to manufacturer’s recommendations
- Can I reuse my grow media?
- Refer to manufacturer’s recommendations.
Transplanting
- Should I transplant sparsely rooted clones into the system?
- No
- Do I need to top-feed newly transplanted clones?
- No, when clones are well rooted and planted as directed. Refer to Water Level info
- Can I move plants from an 8-gallon system to a 13-gallon system?
- Yes
- Can I veg in the dual/quad lids and transplant to single lids?
- Yes, refer to Veg Guidelines.
- Should I dim/raise my lights after transplanting?
- Yes, generally, for the first 24-48 hrs.
Nutrients & Change Outs
- What is the best nutrient for the Under Current system?
- What is the recommended nutrient strength for the Under Current?
- Refer to the Cultured Solutions feeding schedule
- How frequently should I change my nutrients?
- Every 7-10 days
- Should I use Coco Cal (Ca/Mg) in the Under Current?
- Yes, refer to the Cultured Solutions feeding schedule
- Are Carbohydrates/Sweeteners, Enzymes and Beneficial Bacteria recommended in the Under Current?
- No.
Nutrient Schedules
- What feeding schedule should I use for my Under Current®?
- Can I add weeks to my feeding schedule?
- Yes
- To extend VEG repeat week 4
- To extend BLOOM repeat week 5
- Yes
- At what nutrient strength should I maintain my Mother plants?
- Maintain VEG Week 4 (approx. 325-455PPM) of the High Yield Recirculating Hydro feeding schedule.
pH Adjusting
- How do I adjust pH?
- Refer to the General Recommendations under Adjusting pH & EC/ppm
- Can I use both pH UP and pH DOWN if I’ve overshot my desired pH level?
- No, dilute with water and/or wait at least 24hrs.
Flushing
- Do I need to flush my system before harvest?
- Yes, refer to the Cultured Solutions feeding schedule
- Do I need to flush my system between change-outs?
- No
Cleaning
- Do I need to fully disassemble my system to clean it?
- No
- What should I use to clean the system?
- Refer to Sanitization Process.
- Do I have to replace any parts after harvest/cleaning?
- Typically No, when proper the Sanitization Process has been completed. *Though some growers will replace net pots and air stones as needed.
Plant Maintenance/Trouble Shooting
- Should I root prune?
- Yes, refer to info
- If my plants have stalled and haven’t grown for weeks, will they recover?
- Possibly, refer to Troubleshooting.
System Upgrades & Expansion
- Can I expand my Under Current system?
- Yes, contact us.
- Can I upgrade my Water and Air Pump(s)?
- Yes, contact us.
