in that case just try to move the red ones toward the front right area (not now, let them grow. just when propagating, try putting them there). tanks often look better if set up with green more towards the center and red on the outer areas. but i have seen tanks that arent like that and they won contests.
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Eheim Pimp #296 Eheim Ecco 2232 (x2), Eheim Ecco 2234 (x1)
please grow my hatchling (click on it): 
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