Chaeto Gro - Brightwell Aquatics
Buy now, pay later
Split your purchase into smaller payments with the provider you prefer. Pick your plan at checkout.
Checking out with Shop Pay? The Shop Pay screen only offers Shop Pay Installments. To pay with PayPal, Klarna, or Affirm, select Check out as guest to see every payment option, or use the PayPal button in your cart.
Shop Pay Installments
- 4 interest-free payments every 2 weeks on orders from $50 to $999.99
- 2 interest-free payments on orders from $35 to $50
- Monthly plans on orders from $150
- Check out with Shop Pay, then choose an installment plan
Payment options are offered by Affirm and are subject to an eligibility check and might not be available in all states. Monthly plans may include interest (0–36% APR). CA residents: Loans by Affirm Loan Services, LLC are made or arranged pursuant to a California Finance Lender license.
Learn more about Shop Pay InstallmentsPayPal Pay Later
- Pay in 4: 4 interest-free payments every 2 weeks on purchases from $30 to $1,500
- Pay Monthly: 3 to 24 monthly payments on purchases from $49 to $10,000
- Select PayPal in your cart or at checkout, then choose Pay Later
Pay in 4 is available to consumers upon approval and is not currently available to residents of MO. Pay Monthly is subject to consumer credit approval, with a fixed APR of 9.99–35.99%. The lender for Pay in 4 is PayPal, Inc. (NMLS #910457). The lender for Pay Monthly is WebBank.
Learn more about PayPal Pay Later
Klarna
- Pay in 4: 4 interest-free payments every 2 weeks on orders of $35 or more
- No interest or fees when you pay on time
- Choose Klarna as your payment method at checkout
Klarna Pay in 4 is subject to approval and isn't available in Hawaii, U.S. territories (excluding Puerto Rico), or for APO/FPO/DPO addresses. Late fees may apply.
Learn more about Klarna
Affirm
- Pay in 4: 4 interest-free payments every 2 weeks on eligible orders from $50
- Monthly plans with rates from 0–36% APR based on credit
- No late fees or hidden fees
- Choose Affirm as your payment method at checkout
Payment options through Affirm are provided by these lending partners: affirm.com/lenders. Your rate will be 0–36% APR based on credit and is subject to an eligibility check. Affirm Pay in 4 is 0% APR. Options depend on your purchase amount and may vary by merchant. A down payment may be required. CA residents: Loans by Affirm Loan Services, LLC are made or arranged pursuant to a California Financing Law license.
Learn more about AffirmUPC: 810086017065
Goes well with:
90 Day Returns
Reef Guard Covered
Ships Overnight
Orders Over $399*
Expert Support
We've got your back!
Grow stronger. Export more. Keep it balanced.
Brightwell ChaetoGro is a complete nutrient solution designed to fuel chaetomorpha growth in saltwater refugiums. Packed with essential elements like iron, cobalt, and molybdenum, it gives your macroalgae what it needs to grow fast, stay healthy, and consistently pull nutrients from your system.
In ultra-low nutrient systems, chaeto can stall out without proper supplementation. ChaetoGro helps keep growth steady, allowing your refugium to do its job—stabilizing nutrients and supporting a healthier, more natural reef.
The formula is clean and targeted. No added nitrates or phosphates, and completely safe for fish, corals, shrimp, and other invertebrates.
Key Benefits
Balanced blend of 13 essential elements
Supports faster, more consistent chaeto growth
Ideal for ULNS systems running refugiums
Nitrate and phosphate free
Reef-safe for all inhabitants
Available Sizes
250mL
500mL
Dosing Instructions
Start with 5mL per 20 gallons twice weekly for the first two weeks, then adjust based on growth and system demand.
For more stable results, daily dosing is recommended. Dose 6 drops per 20 gallons per day and fine-tune after the first week.
For best performance, maintain at least 0.01 ppm phosphate and 3–5 ppm nitrate. If nutrients are too low, chaeto growth will slow regardless of dosing.