| GHL KH Director | aquaticsupplies.com.au | 450 AUD | 895 AUD | −49.7% |
| KH Director + GHL doser 2.2 SA White | korallifarmi.fi | 989 EUR | — | — |
| KH Director + GHL doser 2.2 SA Black | korallifarmi.fi | 989 EUR | — | — |
| GHL ProfiLux 4 Mega-Set 6E | avastmarine.com | 949.9 USD | — | — |
| GHL Mitras LX7 Marine Black | korallifarmi.fi | 929 EUR | — | — |
| GHL Mitras LX7 Marine white | korallifarmi.fi | 929 EUR | — | — |
| GHL Doser 2.1 Slave, 4 Pumps, Black (PL-1513) | reefsynergy.nz | 824.95 NZD | — | — |
| GHL ProfiLux Expansion Box 2, White (PL-1251) | reefsynergy.nz | 729.95 NZD | — | — |
| GHL ProfiLux 4 Black | korallifarmi.fi | 659 EUR | — | — |
| GHL Doser 3 SA Black | korallifarmi.fi | 579 EUR | — | — |
| GHL Doser 3 SA White | korallifarmi.fi | 579 EUR | — | — |
| GHL Doser 3 EXT Black | korallifarmi.fi | 529 EUR | — | — |
| GHL Doser 3 EXT White | korallifarmi.fi | 529 EUR | — | — |
| GHL Doser 2.2 | avastmarine.com | 445.9 USD | — | — |
| GHL Doser 2.2 EXT white | korallifarmi.fi | 439 EUR | — | — |
| GHL Doser 2.2 EXT Black | korallifarmi.fi | 439 EUR | — | — |
| GHL Doser 2.2 Maxi | avastmarine.com | 369.9 USD | — | — |
| GHL Powerbar6E-PAB CH, 2300 W | korallifarmi.fi | 369 EUR | — | — |
| GHL Versia Flow Versia Flow 6: Qmax = 5500L/h, hmax = 350cm, 24V, max. 40W | korallifarmi.fi | 349 EUR | — | — |
| GHL ProfiLux Mini WiFi White | korallifarmi.fi | 319 EUR | — | — |
| GHL ProfiLux Mini WiFi Black | korallifarmi.fi | 319 EUR | — | — |
| GHL Control Pad | korallifarmi.fi | 290 EUR | — | — |
| GHL PLM-4Level (PL-0872) | reefsynergy.nz | 194.95 NZD | — | — |
| GHL PLM-4Level (PL-0872) | reefsynergy.nz | 194.95 NZD | — | — |
| GHL Versia Stream | korallifarmi.fi | 159 EUR | — | — |
| GHL Temp-Sensor Digital (PL-1115) | reefsynergy.nz | 134.95 NZD | — | — |
| GHL ProfiLux Light WiFi White | korallifarmi.fi | 129 EUR | — | — |
| GHL ProfiLux Light WiFi Black | korallifarmi.fi | 129 EUR | — | — |
| GHL Magnetic Stirrer for GHL Doser 2 (PL-1259) | reefsynergy.nz | 99.95 NZD | — | — |
| GHL Leak Interface (PL-0851) | reefsynergy.nz | 87.95 NZD | — | — |
| GHL Sensor Holder x4 (PL-1053) | reefsynergy.nz | 84.95 NZD | — | — |
| KH Director Reagent (PL-1542) | reefsynergy.nz | 79.95 NZD | — | — |
| KH Reference 1000 ml (PL-1608) | reefsynergy.nz | 79.95 NZD | — | — |
| GHL S-Port & L-Port Breakout Box (PL1680) | reefsynergy.nz | 79.95 NZD | — | — |
| GHL Float Level Sensor (PL-0077) | reefsynergy.nz | 79.95 NZD | — | — |
| GHL Leak Sensor (PL-0850) | reefsynergy.nz | 72.95 NZD | — | — |
| KH Director Reagent 1000ml | korallifarmi.fi | 59.99 EUR | — | — |
| GHL Sensorholder 4 | tropicalmarine.co.uk | 49.99 GBP | — | — |
| GHL BNC3 (PL-1445) | reefsynergy.nz | 44.94 NZD | — | — |
| GHL Sensor Holder x1 (PL-1052) | reefsynergy.nz | 39.95 NZD | — | — |