General Hydroponics Flora Kleen – 2.5 Gallon

General Hydroponics FloraKleen is a 2.5-gallon clearing solution designed to remove fertilizer residues, mineral deposits, and excess salt accumulation from hydroponic systems, growing media, and potted plants. Use it monthly as a preventive flush or at the end of a crop cycle as a final clearing treatment to restore system performance and improve nutrient uptake efficiency.

General Hydroponics FloraKleen Specifications

The following table summarizes the key specifications for the General Hydroponics FloraKleen 2.5 Gallon. These details are drawn from the product’s canonical data and manufacturer documentation.

Why Choose General Hydroponics FloraKleen

FloraKleen addresses a common and often overlooked problem in hydroponic growing: the gradual buildup of fertilizer salts and mineral deposits that reduce nutrient uptake and can stress plants over time. Here is what sets it apart as a maintenance tool for growers:

• Removes fertilizer residues from growing media and system components. Regular fertilizer applications leave behind salt and mineral deposits in rockwool, clay pebbles, coco coir, and the tubing of recirculating systems. FloraKleen is formulated specifically to dissolve and flush these residues out of the root zone and system hardware.
• Monthly use helps prevent salt stress. Excess salt accumulation elevates the effective EC of the root zone beyond intended levels, which inhibits water and nutrient uptake. A monthly FloraKleen flush resets the salt load in the media before it becomes a problem for plant health.
• Effective as a final flush at harvest. Running FloraKleen through your system in the final days before harvest clears residual nutrients from plant tissue, which many growers use as a quality finishing step. It is well-suited for this end-of-cycle application in addition to mid-cycle maintenance use.
• Works across growing media and system types. Whether you are running a deep water culture reservoir, a drip system, a flood-and-drain table, or plants in potting soil, FloraKleen can be applied as a clearing flush without requiring system disassembly.
• 2.5-gallon size is practical for medium to large grows. At this volume, a single container provides multiple flush cycles for a mid-sized operation, reducing the frequency of reordering and keeping costs manageable per flush.

Best Uses for General Hydroponics FloraKleen

FloraKleen fits into a grower’s routine at several points in the crop cycle and across different growing environments. The following use cases reflect the product’s stated purpose and are suited to the hydroponic and soil-based systems for which it was designed.

• Monthly preventive flush in recirculating hydroponic systems. In systems where nutrient solution is recirculated — such as NFT, DWC, or flood-and-drain — salt and mineral residues accumulate on system surfaces and in growing media over weeks of regular feeding. Running FloraKleen through the system once a month helps clear this buildup before it raises EC to stress-inducing levels.
• End-of-cycle harvest flush. Flushing with FloraKleen in the final days of a grow cycle is a common practice for growers who want to clear excess nutrients from the root zone and plant tissue before harvest. The 2.5-gallon size is well-suited to completing this task across multiple plant sites in a single batch.
• Clearing mineral deposits from drip emitters and tubing. In drip systems, mineral deposits and fertilizer precipitates can clog emitters and restrict flow over time. A FloraKleen flush helps dissolve and clear these deposits, extending the functional life of irrigation components. Pairing this with a clean water source — such as an RO-filtered water supply — reduces the rate of future mineral accumulation.
• Resetting potted plants after heavy nutrient programs. Potted plants in soil or coco coir that have been run on aggressive nutrient programs can develop salt crust on the media surface and excess salt concentration deeper in the substrate. FloraKleen can be applied as a soil drench flush to clear this buildup without disrupting plant roots.
• System cleaning between crop cycles. Between consecutive crop cycles, a FloraKleen flush helps clear residues from the previous run before introducing fresh seedlings or clones, reducing the carry-over of accumulated mineral deposits from one cycle to the next.

For growers monitoring EC levels as part of routine maintenance, a calibrated EC meter — such as those in the Apera GroStar EC instrument line — provides useful data for confirming when a flush has effectively reduced salt levels in the root zone.

Dosing Guidelines

FloraKleen is a concentrated clearing solution. Follow the manufacturer’s label instructions for mixing ratios and application volumes. The general approach for monthly maintenance and end-of-cycle flushing is as follows:

• Mix FloraKleen at the manufacturer-recommended rate with plain water (reverse osmosis or low-EC source water is preferred to avoid re-introducing minerals). Do not mix with nutrient concentrates in the same reservoir.
• For recirculating systems: drain or isolate the existing nutrient reservoir, fill with the FloraKleen solution, and run the solution through the system for the manufacturer-specified duration. Then drain fully and refill with fresh nutrient solution.
• For potted plants and growing media: apply the FloraKleen solution as a drench at the same volume you would normally irrigate with, allowing full runoff to carry dissolved salts out through the bottom of the container or tray.
• For end-of-cycle harvest flush: run FloraKleen solution through the system or containers for the final irrigation cycles before harvest, then follow with plain water if desired to clear any FloraKleen residue before cutting.
• Check runoff EC after flushing to confirm that salt levels have dropped to target range. Repeat if runoff EC remains elevated above your target threshold.

Always refer to the current product label for the exact dosing rate, as formulation concentrations can vary between product versions and batch runs. Store FloraKleen in a cool, dry location, away from direct sunlight and freezing temperatures.

Sources & Further Reading