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I inadvertently messed up the flow in my 40 gallon breeder when I switched from 2 smaller HOB power filters on the left and right (back) to one larger HOB on the left only. (No room for sump so HOB filtration only, single Nero 5, 2x AI Prime 16 HD LEDs)
4 different kinds of zoas that had been doing fine have now been closed for a couple of weeks, starting shortly after the HOB configuration change. (All zoas added 1/2022-5/2022)
Couple of ricordea Florida getting blasted and started to wander off the rocks. (Ricordea added 7/2022)
*Visible divot/trench in the sand across (up current) from them started forming due to the flow change.
Here’s a picture showing old/new HOB locations and Nero 5 powerhead that had been in this same location with same schedule/settings for more than a year,,, also no changes to lighting schedule:
My theory is that removing the HOB that was above the zoas caused a massive decrease in flow/turbulence there. (Also the new, stronger HOB on the other side caused current increase forward and into the path of the Nero powerhead which pushed stronger flow across the path of the ricordea)
***Moved my Nero to the right side of the tank (still upper front/middle) and I think that mostly fixed flow to the ricordea but not confident about the zoas.
At this point, I’m just kind of randomly moving my Nero to different locations and trying to judge flow over the zoas with dental floss tied to a straw but not really sure what I’m looking for (since I never had an issue before so never paid that much attention).
*not having luck getting a lot of flow over the zoas so far, but there is VERY LOW flow there,,, not stagnate.
Considering buying a Nero 3 to put across from the Nero 5, or maybe on the back.
*or maybe a super cheap, tiny powerhead I can experiment with.
Afraid to remove the 3d-printed anemone guard from my Nero 5 (been on there since day 1) due to reading horror stories and my urchin/starfish/shrimp climb all over it. (Might buck up and just try it though)
*maybe put one of the rocks with zoas down on the sand in the flow near the ricordea for a few days just to see if any open?
Sorry for the long post but any suggestions?
Any tips on how long zoas can stay closed trying to adapt to changes before they die out?
4 different kinds of zoas that had been doing fine have now been closed for a couple of weeks, starting shortly after the HOB configuration change. (All zoas added 1/2022-5/2022)
Couple of ricordea Florida getting blasted and started to wander off the rocks. (Ricordea added 7/2022)
*Visible divot/trench in the sand across (up current) from them started forming due to the flow change.
Here’s a picture showing old/new HOB locations and Nero 5 powerhead that had been in this same location with same schedule/settings for more than a year,,, also no changes to lighting schedule:
My theory is that removing the HOB that was above the zoas caused a massive decrease in flow/turbulence there. (Also the new, stronger HOB on the other side caused current increase forward and into the path of the Nero powerhead which pushed stronger flow across the path of the ricordea)
***Moved my Nero to the right side of the tank (still upper front/middle) and I think that mostly fixed flow to the ricordea but not confident about the zoas.
At this point, I’m just kind of randomly moving my Nero to different locations and trying to judge flow over the zoas with dental floss tied to a straw but not really sure what I’m looking for (since I never had an issue before so never paid that much attention).
*not having luck getting a lot of flow over the zoas so far, but there is VERY LOW flow there,,, not stagnate.
Considering buying a Nero 3 to put across from the Nero 5, or maybe on the back.
*or maybe a super cheap, tiny powerhead I can experiment with.
Afraid to remove the 3d-printed anemone guard from my Nero 5 (been on there since day 1) due to reading horror stories and my urchin/starfish/shrimp climb all over it. (Might buck up and just try it though)
*maybe put one of the rocks with zoas down on the sand in the flow near the ricordea for a few days just to see if any open?
Sorry for the long post but any suggestions?
Any tips on how long zoas can stay closed trying to adapt to changes before they die out?