UD5 Toolkit
Liquid Fertilizer Dilution Calculator – Online Mix Ratio
Calculate how much liquid fertilizer concentrate to add per gallon of water based on desired N concentration.
Fertilizer Burn Recovery Protocol – Online Flush Calculator
Fertilizer Burn Recovery Protocol
Online Flush Calculator – Save your plants from nutrient overdose
Plant & Nutrient Details
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Most plants recover well below 1.2 mS/cm
Flush Protocol
Enter pot size and concentration details to generate a tailored flush plan.
Frequently Asked Questions
Fertilizer (nutrient) burn occurs when salts accumulate in the growing medium, drawing moisture away from roots and causing leaf tip burn, yellowing, or wilting. Flushing with plain, pH‑balanced water dissolves excess salts and carries them out through drainage, restoring safe root conditions.
Signs include brown or burnt leaf tips/edges, dark green curling leaves, slow growth, and a high runoff EC compared to input feed. A quick runoff test can confirm salt buildup.
As a rule of thumb, use 2‑3 times the pot volume of clean water. Our calculator gives a precise recommendation based on pot size, media water‑holding capacity, and the difference between current and target EC. Always split the flush into multiple smaller applications for best results.
Yes, but severe damage may already be permanent. Flush immediately, trim dead leaves, and place the plant in mild conditions. After flushing, skip nutrients for at least a week and reintroduce at quarter strength only when new growth appears healthy.
Use water adjusted to the same pH you normally feed (typically 5.8–6.5 for soilless/peat, 6.0–7.0 for soil). Proper pH ensures nutrients can be leached efficiently and prevents additional stress.
Coco and rockwool hold more water and may require slightly different flush volumes. Soil drains slower, so extend the interval between successive flushes. Our calculator accounts for typical water‑holding capacity of each medium.
EC (electrical conductivity) is universal; PPM depends on the conversion scale (500 or 700). Our tool lets you work with either — just choose your preferred unit, and calculations are converted automatically using the correct factor.
Wait at least 5–7 days and only resume feeding when the plant shows signs of recovery (new growth). Start with a very dilute nutrient solution (¼ of usual strength) and gradually increase over a couple of weeks.
Fertilizer NPK Calculator - Online Nutrient Mix Ratio
Calculate how much fertilizer to add based on desired N‑P‑K ppm and water volume. For hydroponics and soil growers.
Sobriety Counter & Milestones - Online Recovery Tracker
Track days of sobriety with a motivational counter and milestone celebrations. Set quit date and see time elapsed in days, hours, minutes. Private & local.
Sleep Debt Tracker - Online Cumulative Sleep Loss Calculator
Log daily sleep to see cumulative sleep debt or surplus over weeks. Visualizes chronic sleep loss trends. Stores data locally in your browser only.