Need Advice - Changing Filters.
Recently I moved my 7 zebra plecos from my 20 gallon long tank to a 34 gallon corner tank. I had a Eheim 2126 on the 20 gallon tank and a Eheim 2026 on the 34 gallon tank (same flow rate, just without a built-in heater). To compensate (becuase the zebras like very high flow), I've temporaily added a powerhead in the new 34 gallon tank. However I just purchased a Eheim 2076 (Pro 3e) for this tank. Now I need to transition filters.
The 2026 has 2L of Substrat and 1L of Efhimech. The Pro3e-2076 needs 6L of Substrat and 2L of Efhimech. I ordered the additional media and it should be in sometime this week. The question is how best to make the transtion without stressing out the zebras by creating a "mini" cycle?
I plan to use the old media and probably steal another 1L of established substrat from yet another established filter I have. But this is going to leave 3L of unestablished substrat and 1L of unestablished Efhimech in the new Pro3e-2076, not to mention unused blue and white filter pads (can't resuse the ones from the 2026 since they are a different shape).
Additionally I planned to strain the water left in the old 2026 filter upon disconnect with the new filter pads to help "seed" them. I also plan to pur the old mulm into the new filter. Lastly, I plan to use lots of ADA Bacter 100 and Green Bacter to facilitate the process.
Are there any other suggestions to make this transition as seamless and stress-free on the fish as possble? Has anyone else done this? I'd appreciate any feedback and/or suggestions.
L046 (Zebra Plecos) 3M/2F + Juveniles
L144 (SF Blue Red Eye BN Plecos) Juveniles
L134 (Leopard Frog Plecos) 1M/1F