Pricing

One plan. Both tools.
Pay monthly, save with yearly billing,
or try a single month with no commitment.

What you get after access

Nutrient Replication Calculator + Feeding Scheduler

Grower Access

Replicate any nutrient line and dial in usage rates. The Calculator and Feeding Scheduler, together.

Nutrient replication calculator access. Replicate (and improve) any line
Shopping list of inputs for replication
Separate Nitrogen for a proper taper
Feeding scheduler access. Easily determine your usage rates while mixing your tanks for any part of the cycle

Monthly

$50/ month

Renews monthly. Card or PayPal. Cancel anytime.

Get monthly

Save $100

Yearly

$500/ year

Renews yearly. Card or PayPal. Cancel anytime.

Get yearly

Single month

$50one-time

30 days of access, paid once. Does not renew or auto-charge. Card or PayPal.

Buy one month

Saved calculator formulations, regimen formulations and feeding regimens will be deleted from our database 30 days after your month ends, unless you get monthly or yearly access or purchase another month before then.

7-day calculator trial

Trial access unlocks the nutrient calculator so you can run a replication and see the PPM breakdown of your line. Trial access does not include the Feeding Scheduler, saving a formulation, saving a regimen, or usage rates.

No card required. The trial never charges you.

Create an account to start the trial. Sign in if you already have one.

Create account Sign in

Payments are processed securely. Monthly and yearly accept card or PayPal. Single month is card or one-time PayPal (not recurring PayPal billing). Cancel anytime.

What happens when the 7-day trial ends?: Nothing is charged. The trial never asks for a card. After 7 days, calculator access ends and you can choose monthly, yearly, or a single month of Grower Access if you want to keep going.
What's the difference between monthly and yearly billing?: Both give you the same access, the Nutrient Replication Calculator and Feeding Scheduler. Monthly renews every month at $50; yearly renews once a year at $500, which works out to $100 less than paying monthly all year. Pay with card or PayPal.
Can I cancel anytime?: Yes, for Monthly and Yearly. Cancelling stops future renewals immediately, but your access continues through the period you've already paid for. There are no refunds for partial periods.
How do I switch between monthly and yearly?: Choose monthly or yearly from this page. The new plan replaces the old one: we cancel your previous plan as soon as the new one is set up, so you're never billed for both. Your new billing period starts the day you switch, and the remainder of the period you already paid for isn't refunded or prorated.
How does the Custom Hydro affiliate discount work?: Buy your inputs through our Custom Hydro links. Once your purchase is confirmed, if you have monthly access your next renewal drops to $45. You also have a 30 day window to switch to a yearly plan for $475, which is 5% off the $500 yearly price. After the 30 day window the yearly price goes back to $500 and monthly renewals go back to $50, unless another confirmed Custom Hydro purchase opens a new window. Single month purchases stay $50 and are never discounted.
Does Single month renew?: No. It's a one-time $50 charge for 30 days of access. Pay with card or one-time PayPal. Single month is not recurring PayPal billing. No billing agreement is kept on file, and nothing renews or charges again automatically. To keep going after 30 days, come back and buy another month (or switch to Monthly/Yearly).
What happens to my saved data after a single month ends?: Your saved calculator formulations, regimen formulations and feeding regimens stay in our database for 30 days after access ends, in case you come back. If you haven't gotten monthly or yearly access or purchased another month by then, they're deleted.
Accuracy: This tool estimates a recipe from the nutrient percentages and dosage rates you enter. Results are a practical replication target, not a certified lab analysis or guarantee of the same EC or ppm as a commercial product or manufacturer chart. Guaranteed analysis labels themselves have a small margin of error allowed. Salt grade, water, temperature and meter calibration all affect the final mix. Always double check amounts before mixing, incorrect doses can harm plants.
Does this work with lines including but not limited to Athena, Cropsalt, HGV, Heavy 16, FloraFlex, United, or Mills?: Yes. Type the percentages and ingredients from your label and the replicator will recreate the recipe based off the numbers and chemistry. We are not affiliated with these brands in any way.

Grower Discord is open if you want to ask about mixing. Join the Discord

Follow along: @lostartofgrowing

Support: support@lostartofgrowing.com