Pureflow Bio

PureFlow Bio — Excellence in Every Drop
Menu
PUREFLOW BIO / ENGINEERING FIELD GUIDE

Recirculating HydroponicsSave Water and Control Disease

Recirculating hydroponics: how closed-loop nutrient solution works, solution management, filtration, disinfection, EC and pH control and common mistakes.

Explore the process ↗Open the workbench
9 MIN GUIDEUPDATED NOVEMBER 2026
Concept illustration of greenhouse growing beds, roots, a reservoir and return-water treatment.SYSTEM CONCEPT
AI-generated educational concept illustration; not a Pureflow installation photograph or an approved construction drawing.
01Understand the mechanismInspect the relevant process stages.
02Review the operating dutyKeep assumptions and measured values visible.
03Prepare the next decisionUse the guide, tools and project checks.
INTERACTIVE PROCESS ATLAS

See the mechanism.
Understand the duty.

Select a route or a stage to inspect the process. The cutaway explains the equipment and water environment; it is a teaching illustration, not a project drawing.

Swipe horizontally to inspect the equipment. Stage buttons below also centre the selected component.
Recirculating nutrient solution and root zonePUREFLOW / INTERACTIVE PROCESS ATLASCONCEPT LAYOUT · NOT TO SCALEROOT ZONE / IRRIGATIONMANAGED RESERVOIRRETURN-WATER TREATMENTMEASURED SUPPLYMotion explains the process; it is not a measured flow rate or biological time model.
Managed solution reaches the growing system and returns through the defined collection route.
Selected process stage

Supply the roots

Use measured irrigation and peak return duty.

How it works

A managed nutrient solution reaches the growing system at a flow suited to its design.

What to establish
  • Use measured irrigation and peak return duty.
  • Record nutrient chemistry, temperature and root-zone conditions.
  • Coordinate treatment with the growing method and crop programme.

Continue this guide ↗

Motion explains direction and mechanism; it does not represent measured performance. Geometry, stage order, pipe routes and equipment configuration are conceptual. Use the approved project design, operating instructions and verified model data.

Key takeaways

  • Reuse saves water and nutrients.
  • Filter and disinfect to stop pathogens spreading.
  • Check EC and pH every day and top up by balancing, not guessing.
  • Replace the solution on a schedule.
Reference illustration for Recirculating Hydroponics: Save Water and Control Disease
Equipment reference visual; not evidence of a completed installation.
THE SHORT ANSWER

How the loop works

  1. Mix solution in the reservoirSet EC and pH.
  2. Pump to the cropThrough channels or drippers.
  3. Collect the runoffReturn to the reservoir.
  4. Treat the returnFilter and disinfect.
  5. Adjust and repeatCorrect EC and pH.
Recirculating Hydroponics - Pureflow Bio
Reference visual. Equipment configuration and project details must be confirmed separately.
Recirculating Hydroponics - Pureflow Bio
Reference visual. Equipment configuration and project details must be confirmed separately.
HYDROPONICS

Managing the solution

TaskHow often
Check pH and ECDaily
Top up with waterAs needed
Replace the solutionEvery few weeks or as advised
Clean the reservoirBetween crops

Roots take some nutrients faster than others, so ratios drift. Test and rebalance rather than only adding more.

PLANNING WORKBENCH

Work with your own numbers.

Use the tools below to explore the relevant arithmetic. Enter measured values or declared assumptions. An estimate does not establish equipment capacity, biological performance or a safe operating limit.

Hydroponic return-flow scenario

Convert a daily irrigation plan and drainage fraction into an average return flow.

Assumptions and limits

Average flow can be far below short irrigation peaks. Measure the peak and account for solids, chemistry and disinfection before selecting equipment.

—Irrigation · m³/day
—Drainage · m³/day
—Average return flow · m³/h
Enter your values, or load the labelled arithmetic example. No design values are pre-filled.
FormulaDaily drainage m³ = area × application × drainage share ÷ 100,000. Average return flow = drainage ÷ hours.
Convert units before you calculate
Choose units and enter a value.

Planning arithmetic · inputs remain visible for review · example values are not operating recommendations

HYDROPONICS

Filter, then disinfect

See drum filters and UV.

HYDROPONICS

Common mistakes

  • Never replacing the solution.
  • No disinfection.
  • Warm reservoirs.

Pureflow Bio equipment for this

Standard drum filters (RDF) →Solids removal for recirculating nutrient solution.UV disinfection systems →UV-C to control pathogens and algae.
PROJECT REVIEW

Use the real irrigation return

Use these questions to prepare a project brief or an operating review. Check an item only when the information has been recorded for your installation.

0 of 3 checked

This checklist is a working aid in the current page session, not a saved maintenance record.

QUESTIONS

Recirculating Hydroponics FAQ

How often should I change the solution?

Depends on crop and system. Test EC and nutrients regularly.

Is recirculating safe?

Yes with filtration and disinfection.

Do I need UV?

It greatly reduces disease risk.

KEEP READING
Hydroponics→Nutrient solution→Hydroponic algae control→Reservoir sizing→Deep Water Culture: Setup, Oxygen and Common Problems ↗Drum Filter for Hydroponics: Drain Water Filtration Guide ↗

Discuss your system with Pureflow.

Share your application, operating volume, actual flow, loading and the question you are trying to resolve.

Discuss on WhatsApp ↗
Scroll to Top