leaf tip darkening and an orchid that refuse to give up blooming.

[PuiPuiMolcar]

Gastrochilus Bellinus and ultriculariodes Ionopsis
I'm trouble with these two orchids and I can't figure excatly what's going on.

My growing condition:
Humidity consistently 85%+
Water by spraying once a day, sometime twice.
tempt 60f - 70f, on some hot day, it can be 75f
Ventilation - a fan blowing 24/7 at medium power directly.

My G.Bellinus was transitioning from pot to mount about 5 months ago. It did fine until it started to blacken its leaf tip. At first I thought it was a fertilizer burn and I decreased the dose, yet it was still happening, then I thought it could need more water, so I watered it twice a day, nothing changed. It has not abandon any of the old roots from the pots, so it can't be the watering. It's not in a bad shape overall, and it is growing new leaf, however I'm tempting to put it back in the pot.
The other smaller Gastrochilus that is also mounted on the same cork is doing fine however.

The my U.Ionopsis
This orchid for some reason blast as soon as they are about to bud. It then create another spike, trying really hard to force a bloom only to end up flopping. It's been going on this crash and burn cycle that doesnt seem to stop. It refuse to be on vegetative growth until it bloom.

Anyone who have these in your collection I would appreciate your input.

[Roberta]

For the Gastrochilus, maybe just an effect of the transition. Orchids don't do anything fast, so could have taken some time to react. Roots look great and new growth looks fine too. The humidity seems rather high. This is a relatively high-elevation plant. If you can manage the watering, consider moving it outside.

The other one is Ionopsis utricularioides (name is backwards and mis-spelled). That one is a warm-grower, maybe would benefit from more heat (especially with strong air movement which could cause a draft or chill that could blast buds. But I'm unfamiliar with it, perhaps someone who grows it could help here.