Description
Top Up the Two Elements Coco Quietly Takes Away
IONIC Tonic is the new name for IONIC Cal-Mag Pro, Growth Technology's calcium and magnesium supplement, now in the redesigned IONIC packaging. It supplies plant-available calcium in three forms, including chelated calcium for a rapid dose, and magnesium alongside nitrogen, chelated iron to drive chlorophyll production, L-form amino acids, humic acids and seaweed-based plant extracts. Fast-growing plants draw heavily on both elements, and peak flowering is when demand outstrips supply. It is particularly useful in coco, which holds on to calcium, and in any room running a strong PK booster, where high potassium levels can lock calcium and magnesium out.
Key Benefits
- Calcium in three forms - including chelated calcium for a rapid dose, with magnesium in a form the plant can take up straight away.
- Fixes interveinal yellowing - the classic magnesium shortage that shows as yellowing between the leaf veins.
- Addresses calcium spotting - the small dark brown spots with sharp edges that follow a calcium shortfall.
- Built for coco - offsets the calcium that coco fibre binds before the roots ever reach it.
- Supports heavy PK feeding - counters the lockout that high potassium levels can cause in late flower.
- Chelated iron and nitrogen - drives chlorophyll production and keeps new growth green rather than simply patching one element.
- Amino acids and seaweed - L-form amino acids aid recovery, and seaweed extracts help plants cope with stress.
The Hidden Cause of Yellowing Leaves
A pale, patchy plant usually gets read as a feed problem, so growers push the EC up and make things worse. More often the elements are present but blocked. Coco binds calcium on the way past, and a heavy PK dose floods the root zone with potassium that competes for the same uptake sites. Adding calcium and magnesium separately restores the ratio instead of raising everything at once.
How to Use
- Use alongside any base feed.
- Add to fresh water before your base nutrient, not into a concentrated feed.
- Stir well, then add the rest of the feed and set pH last.
- Use routinely through coco grows rather than waiting for symptoms.
- Increase during peak flowering and alongside any strong PK booster.
- Never mix the concentrate directly with concentrated PK or silicon products.
Specifications
| Type | Calcium and magnesium supplement |
|---|---|
| Key Elements | Calcium (three forms, including chelated), magnesium, nitrogen, chelated iron |
| Also Contains | L-form amino acids, humic acids, seaweed and plant extracts |
| Best For | Coco, heavy PK feeding, peak flowering |
| Previously Sold As | IONIC Cal-Mag Pro |
