Nutrients — Aptus

Small bottles, small doses, and a large gap if you misjudge one. Measure it, do not estimate.

Aptus sells almost no base nutrition. What is here are concentrated additives you run alongside your own nutrient line, whichever that is. That makes the brand attractive to anyone who already has a schedule that works and wants to add to it deliberately, and it makes accurate measuring more important than with most other brands on this site.

What is on the shelf

The All-in-One comes as a powder and as a liquid. The boosters are split by phase: Startbooster at the beginning, Topbooster and Super-PK in flowering. The Boost monos, N-Boost, P-Boost, K-Boost and CaMg-Boost, adjust one element. Alongside those sit Enzym+, Fulvic-Blast, Humic-Blast, Regulator, NutriSpray and System-Clean, plus the Tent Sets Basic and Pro as an introduction.

Concentrated means a measuring error carries through

With a dilute product, a splash too much largely corrects itself. With a concentrated one it does not: the same carelessness delivers a multiple of the intended dose. Use a syringe or a measuring cup rather than the cap, and keep track of how many products you are stacking. Several Aptus additives in one reservoir is normal use, but the total load climbs faster than the EC will show you.

System-Clean does not belong in the same reservoir as your biology

System-Clean is an oxidising product that keeps lines and drippers clear. That is exactly why it does not combine with enzymes, live bacterial cultures or mycorrhiza: an oxidiser does not distinguish between build-up and the soil life you just paid for. Aptus stock both Enzym+ and System-Clean themselves, so the question arises within a single brand. Separate them in time rather than mixing them in one tank, and read the instructions on both bottles.