Aptus Bloomboost
Aptus Bloomboost is a fully organic bio-stimulant for the flowering and fruiting half of a crop, and it works on what the plant does with its own genetics rather than simply pushing more fertiliser at it. It is not a PK liquid. Instead of a heavy dose of phosphorus and potassium, it carries a slight but constant level of potassium alongside sulphur and boron, the two elements that quietly decide how much aroma and structure a flower ends up with. Aptus position it as optimising a plant's genetic expression, lifting trichome, terpene, flavonoid and oil production, and improving the quality, flavour, yield and shelf life of finished flowers and extracts. It suits all species of plants, with flowering and fruiting crops getting the most out of it.
Potassium is the thickener here, forming fibrous, dense fruit and flowers and firming them as they ripen, and Aptus keep it slight and constant so it works with mineral antagonism rather than against it, supporting flower development from the start without crowding other elements out. Sulphur is a component of essential amino acids and of certain plant hormones, and it sits behind the formation of oils and volatile compounds, which is why the extra sulphur reads on the finished flower as terpenes, flavonoids and a stronger nose. Boron holds membranes and cell walls together through cell division, so structure keeps pace as flowers build. Together the three also act as a precursor to healthy chlorophyll formation, keeping photosynthesis strong through bloom, and they support the plant's reproductive side, including heavy flower setting and healthy pollen and seed formation for anyone breeding.
Bloomboost goes into the reservoir at every feed from the second week of flowering and can run right through to harvest with no penalty to quality or flavour. It is just as useful as a foliar spray, and the first two weeks of flower are where that pays off most, for initial flower set and early plant development. Because the compounds in it are organic, it will form a biofilm in a recirculating system and add to the cleaning workload, which is why many growers add it one to two days before the feed water is replaced. Within the Aptus CLEAN Program it is not recommended for rockwool, and fertigation systems are held to a single Bloomboost feed per week to keep the lines clear. It can also be used on an organically certified farm. Whichever programme you run, mix the solution fresh and use it straight away; three days is the outside limit.
NOTE: Do not add Bloomboost to a deep water culture system. Products containing organic compounds should not be used in DWC, and DWC growers wanting to use Bloomboost should apply it as a foliar spray only. The Australian safety data sheet carries the signal word WARNING: Bloomboost may damage fertility or the unborn child, is harmful if swallowed, and may be irritating to eyes.
A fully organic bio-stimulant that optimises your plants' genetic expression!
Denser Flowers
Potassium thickens fruit and flower structuresRicher Aroma
Sulphur drives terpene and flavonoid productionOrganic Input
Usable on organically certified commercial farms
Sold out
Verified by Hydro Oasis
30-day returns
Secure checkout
with
Buy with confidence
-
Talk to a real grower
Not sure it suits your setup? Call our Youngtown team on
0481 526 666.
-
Price Beat Guarantee
Found it cheaper elsewhere? We'll
beat any competitor's price by 5%.
-
Tasmania's own hydroponics shop
Buy online & collect in-store at 2/322 Hobart Rd, Youngtown TAS, usually within the hour.

Aptus Bloomboost
Key Highlights
expand_more
- Fully organic bio-stimulant for the whole fruiting and flowering period
- Potassium, sulphur and boron supplied together in plant-available form
- Boron supports cell wall synthesis and cell division as flowers build
- Sulphur feeds the oils and volatile compounds behind aroma and flavour
- Increases trichome and terpene production
- Backs heavy flower setting, plus pollen and seed formation for breeders
- Suits all species of plants, especially flowering and fruiting crops
- Works as a foliar spray as well as a reservoir additive
Directions for Use
expand_more
Dilution Rate
- Hydroponics: 0.2 ml - 0.5 ml per 1 L
- Soil: 0.2 ml - 0.33 ml per 1 L
- Foliar spray: 1 ml per 1 L
Application
- Add Bloomboost to the reservoir at every feeding from the second week of the flowering stage, and continue through to harvest.
- Fill the tank with fresh water first, add Bloomboost, mix well, then check pH.
- Use the mixed nutrient solution immediately, and always within 3 days.
- For foliar use in early flower, spray Bloomboost together with Aptus FASiLITOR at least twice per week for the first two weeks of flowering.
- In a recirculating system, add Bloomboost to the reservoir 1 - 2 days before replacing the feed water to limit biofilm build-up.
- In a fertigation system, use Bloomboost for no more than one feed per week.
- A higher dilution, up to 0.5 ml per 1 L, may be used for an increased result in quality; check that your PPM and bloom base nutrient mixture allow for the increased dosage.
Safety
Signal word DANGER. Bloomboost may damage fertility or the unborn child, is harmful if swallowed, and may be irritating to eyes.
Do not mix with other substances, and do not store this mildly alkaline solution with strong acids such as FASiLITOR or Siliforce.
Spills may make hard surfaces slippery and may mark porous surfaces.
If swallowed, rinse mouth and spit, give a glass of water if the person is conscious, and contact the Poisons Information Centre on 13 11 26 or a doctor.
If eye contact occurs, rinse cautiously with running water for several minutes, remove contact lenses if present and easy to do, continue rinsing, and get medical advice if irritation persists.
If skin contact occurs, wash with plenty of water, and get medical advice if irritation occurs.
If inhaled, move to fresh air, rinse mouth and spit, and contact the Poisons Information Centre or a doctor.
Shipping & Returns
expand_more
Check delivery options for the currently selected item and quantity.
Estimate is for this item and quantity only. Final whole-order freight is confirmed at checkout.
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at info@hydrooasis.com.au
If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
You can always contact us for any return question at info@hydrooasis.com.au.
Size: 100 ml